diff --git a/atom/browser/api/atom_api_content_tracing.cc b/atom/browser/api/atom_api_content_tracing.cc
index 28a95aa71e6f..b5d9cb6c738e 100644
--- a/atom/browser/api/atom_api_content_tracing.cc
+++ b/atom/browser/api/atom_api_content_tracing.cc
@@ -32,23 +32,23 @@ struct Converter<std::set<T> > {
 };
 
 template<>
-struct Converter<base::debug::CategoryFilter> {
+struct Converter<base::trace_event::CategoryFilter> {
   static bool FromV8(v8::Isolate* isolate,
                      v8::Handle<v8::Value> val,
-                     base::debug::CategoryFilter* out) {
+                     base::trace_event::CategoryFilter* out) {
     std::string filter;
     if (!ConvertFromV8(isolate, val, &filter))
       return false;
-    *out = base::debug::CategoryFilter(filter);
+    *out = base::trace_event::CategoryFilter(filter);
     return true;
   }
 };
 
 template<>
-struct Converter<base::debug::TraceOptions> {
+struct Converter<base::trace_event::TraceOptions> {
   static bool FromV8(v8::Isolate* isolate,
                      v8::Handle<v8::Value> val,
-                     base::debug::TraceOptions* out) {
+                     base::trace_event::TraceOptions* out) {
     std::string options;
     if (!ConvertFromV8(isolate, val, &options))
       return false;
diff --git a/atom/browser/api/atom_api_web_contents.cc b/atom/browser/api/atom_api_web_contents.cc
index e0c433695e74..95e99cf5648b 100644
--- a/atom/browser/api/atom_api_web_contents.cc
+++ b/atom/browser/api/atom_api_web_contents.cc
@@ -315,12 +315,11 @@ content::WebContents* WebContents::GetOwnerWebContents() const {
   return embedder_web_contents_;
 }
 
-void WebContents::GuestSizeChanged(const gfx::Size& old_size,
-                                   const gfx::Size& new_size) {
+void WebContents::GuestSizeChanged(const gfx::Size& new_size) {
   if (!auto_size_enabled_)
     return;
+  GuestSizeChangedDueToAutoSize(guest_size_, new_size);
   guest_size_ = new_size;
-  GuestSizeChangedDueToAutoSize(old_size, new_size);
 }
 
 void WebContents::RegisterDestructionCallback(
diff --git a/atom/browser/api/atom_api_web_contents.h b/atom/browser/api/atom_api_web_contents.h
index 9b2a9cd4e3e4..2578c5c2a418 100644
--- a/atom/browser/api/atom_api_web_contents.h
+++ b/atom/browser/api/atom_api_web_contents.h
@@ -180,8 +180,7 @@ class WebContents : public mate::EventEmitter,
   void DidAttach(int guest_proxy_routing_id) final;
   void ElementSizeChanged(const gfx::Size& size) final;
   content::WebContents* GetOwnerWebContents() const final;
-  void GuestSizeChanged(const gfx::Size& old_size,
-                        const gfx::Size& new_size) final;
+  void GuestSizeChanged(const gfx::Size& new_size) final;
   void RegisterDestructionCallback(const DestructionCallback& callback) final;
   void SetGuestSizer(content::GuestSizer* guest_sizer) final;
   void WillAttach(content::WebContents* embedder_web_contents,
diff --git a/atom/browser/atom_browser_client.cc b/atom/browser/atom_browser_client.cc
index ef76693b2c27..2a246f227647 100644
--- a/atom/browser/atom_browser_client.cc
+++ b/atom/browser/atom_browser_client.cc
@@ -79,7 +79,6 @@ void AtomBrowserClient::ResourceDispatcherHostCreated() {
 
 void AtomBrowserClient::OverrideWebkitPrefs(
     content::RenderViewHost* render_view_host,
-    const GURL& url,
     content::WebPreferences* prefs) {
   prefs->javascript_enabled = true;
   prefs->web_security_enabled = true;
@@ -99,7 +98,9 @@ void AtomBrowserClient::OverrideWebkitPrefs(
   prefs->allow_running_insecure_content = false;
 
   // Turn off web security for devtools.
-  if (url.SchemeIs("chrome-devtools")) {
+  auto web_contents = content::WebContents::FromRenderViewHost(
+      render_view_host);
+  if (web_contents && web_contents->GetURL().SchemeIs("chrome-devtools")) {
     prefs->web_security_enabled = false;
     return;
   }
@@ -115,7 +116,7 @@ void AtomBrowserClient::OverrideWebkitPrefs(
   NativeWindow* window = NativeWindow::FromRenderView(
       process->GetID(), render_view_host->GetRoutingID());
   if (window)
-    window->OverrideWebkitPrefs(url, prefs);
+    window->OverrideWebkitPrefs(prefs);
 }
 
 bool AtomBrowserClient::ShouldSwapBrowsingInstancesForNavigation(
diff --git a/atom/browser/atom_browser_client.h b/atom/browser/atom_browser_client.h
index f35dddac1238..828b3f78f78a 100644
--- a/atom/browser/atom_browser_client.h
+++ b/atom/browser/atom_browser_client.h
@@ -26,7 +26,6 @@ class AtomBrowserClient : public brightray::BrowserClient {
   content::AccessTokenStore* CreateAccessTokenStore() override;
   void ResourceDispatcherHostCreated() override;
   void OverrideWebkitPrefs(content::RenderViewHost* render_view_host,
-                           const GURL& url,
                            content::WebPreferences* prefs) override;
   bool ShouldSwapBrowsingInstancesForNavigation(
       content::SiteInstance* site_instance,
diff --git a/atom/browser/native_window.cc b/atom/browser/native_window.cc
index 739f1b3a2358..0576fec05761 100644
--- a/atom/browser/native_window.cc
+++ b/atom/browser/native_window.cc
@@ -435,8 +435,7 @@ void NativeWindow::AppendExtraCommandLineSwitches(
   }
 }
 
-void NativeWindow::OverrideWebkitPrefs(const GURL& url,
-                                       content::WebPreferences* prefs) {
+void NativeWindow::OverrideWebkitPrefs(content::WebPreferences* prefs) {
   if (web_preferences_.IsEmpty())
     return;
 
diff --git a/atom/browser/native_window.h b/atom/browser/native_window.h
index d7661bf7487d..b300fce3d7b3 100644
--- a/atom/browser/native_window.h
+++ b/atom/browser/native_window.h
@@ -192,7 +192,7 @@ class NativeWindow : public brightray::DefaultWebContentsDelegate,
   // Called when renderer process is going to be started.
   void AppendExtraCommandLineSwitches(base::CommandLine* command_line,
                                       int child_process_id);
-  void OverrideWebkitPrefs(const GURL& url, content::WebPreferences* prefs);
+  void OverrideWebkitPrefs(content::WebPreferences* prefs);
 
   // Public API used by platform-dependent delegates and observers to send UI
   // related notifications.
diff --git a/atom/browser/web_view_manager.cc b/atom/browser/web_view_manager.cc
index 1fda008d0dc5..91124f911904 100644
--- a/atom/browser/web_view_manager.cc
+++ b/atom/browser/web_view_manager.cc
@@ -42,7 +42,8 @@ void WebViewManager::AddGuest(int guest_instance_id,
   webview_info_map_[guest_process_id] = info;
 
   // Map the element in embedder to guest.
-  ElementInstanceKey key(embedder, element_instance_id);
+  int owner_process_id = embedder->GetRenderProcessHost()->GetID();
+  ElementInstanceKey key(owner_process_id, element_instance_id);
   element_instance_id_to_guest_map_[key] = guest_instance_id;
 }
 
@@ -76,9 +77,9 @@ bool WebViewManager::GetInfo(int guest_process_id, WebViewInfo* webview_info) {
 }
 
 content::WebContents* WebViewManager::GetGuestByInstanceID(
-    content::WebContents* embedder,
+    int owner_process_id,
     int element_instance_id) {
-  ElementInstanceKey key(embedder, element_instance_id);
+  ElementInstanceKey key(owner_process_id, element_instance_id);
   if (!ContainsKey(element_instance_id_to_guest_map_, key))
     return nullptr;
 
diff --git a/atom/browser/web_view_manager.h b/atom/browser/web_view_manager.h
index f87284c39e82..87f3c5699433 100644
--- a/atom/browser/web_view_manager.h
+++ b/atom/browser/web_view_manager.h
@@ -50,9 +50,8 @@ class WebViewManager : public content::BrowserPluginGuestManager {
 
  protected:
   // content::BrowserPluginGuestManager:
-  content::WebContents* GetGuestByInstanceID(
-      content::WebContents* embedder_web_contents,
-      int element_instance_id) override;
+  content::WebContents* GetGuestByInstanceID(int owner_process_id,
+                                             int element_instance_id) override;
   bool ForEachGuest(content::WebContents* embedder,
                     const GuestCallback& callback) override;
 
@@ -65,26 +64,25 @@ class WebViewManager : public content::BrowserPluginGuestManager {
   std::map<int, WebContentsWithEmbedder> web_contents_embdder_map_;
 
   struct ElementInstanceKey {
-    content::WebContents* owner_web_contents;
+    int embedder_process_id;
     int element_instance_id;
 
-    ElementInstanceKey(content::WebContents* owner_web_contents,
-                       int element_instance_id)
-        : owner_web_contents(owner_web_contents),
+    ElementInstanceKey(int embedder_process_id, int element_instance_id)
+        : embedder_process_id(embedder_process_id),
           element_instance_id(element_instance_id) {}
 
     bool operator<(const ElementInstanceKey& other) const {
-      if (owner_web_contents != other.owner_web_contents)
-        return owner_web_contents < other.owner_web_contents;
+      if (embedder_process_id != other.embedder_process_id)
+        return embedder_process_id < other.embedder_process_id;
       return element_instance_id < other.element_instance_id;
     }
 
     bool operator==(const ElementInstanceKey& other) const {
-      return (owner_web_contents == other.owner_web_contents) &&
+      return (embedder_process_id == other.embedder_process_id) &&
           (element_instance_id == other.element_instance_id);
     }
   };
-  // (web_contents, element_instance_id) => guest_instance_id
+  // (embedder_process_id, element_instance_id) => guest_instance_id
   std::map<ElementInstanceKey, int> element_instance_id_to_guest_map_;
 
   typedef std::map<int, WebViewInfo> WebViewInfoMap;
diff --git a/atom/common/chrome_version.h b/atom/common/chrome_version.h
index 1971756871b9..6b2ea8d91a45 100644
--- a/atom/common/chrome_version.h
+++ b/atom/common/chrome_version.h
@@ -8,7 +8,7 @@
 #ifndef ATOM_COMMON_CHROME_VERSION_H_
 #define ATOM_COMMON_CHROME_VERSION_H_
 
-#define CHROME_VERSION_STRING "41.0.2272.76"
+#define CHROME_VERSION_STRING "42.0.2311.107"
 #define CHROME_VERSION "v" CHROME_VERSION_STRING
 
 #endif  // ATOM_COMMON_CHROME_VERSION_H_
diff --git a/atom/common/platform_util_win.cc b/atom/common/platform_util_win.cc
index 78fb0ca00540..1998b8873189 100644
--- a/atom/common/platform_util_win.cc
+++ b/atom/common/platform_util_win.cc
@@ -13,6 +13,7 @@
 #include "base/bind.h"
 #include "base/bind_helpers.h"
 #include "base/files/file_path.h"
+#include "base/files/file_util.h"
 #include "base/logging.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
@@ -128,7 +129,10 @@ void ShowItemInFolder(const base::FilePath& full_path) {
 }
 
 void OpenItem(const base::FilePath& full_path) {
-  ui::win::OpenItemViaShell(full_path);
+  if (base::DirectoryExists(full_path))
+    ui::win::OpenFolderViaShell(full_path);
+  else
+    ui::win::OpenFileViaShell(full_path);
 }
 
 void OpenExternal(const GURL& url) {
diff --git a/chromium_src/chrome/renderer/printing/print_web_view_helper.cc b/chromium_src/chrome/renderer/printing/print_web_view_helper.cc
index 46718a0c546a..60158f6c1d4c 100644
--- a/chromium_src/chrome/renderer/printing/print_web_view_helper.cc
+++ b/chromium_src/chrome/renderer/printing/print_web_view_helper.cc
@@ -425,8 +425,10 @@ class PrepareFrameAndViewForPrint : public blink::WebViewClient,
   virtual void didStopLoading();
 
   // blink::WebFrameClient override:
-  virtual blink::WebFrame* createChildFrame(blink::WebLocalFrame* parent,
-                                            const blink::WebString& name);
+  virtual blink::WebFrame* createChildFrame(
+      blink::WebLocalFrame* parent,
+      const blink::WebString& name,
+      blink::WebSandboxFlags sandboxFlags);
   virtual void frameDetached(blink::WebFrame* frame);
 
  private:
@@ -571,7 +573,8 @@ void PrepareFrameAndViewForPrint::didStopLoading() {
 
 blink::WebFrame* PrepareFrameAndViewForPrint::createChildFrame(
     blink::WebLocalFrame* parent,
-    const blink::WebString& name) {
+    const blink::WebString& name,
+    blink::WebSandboxFlags sandboxFlags) {
   blink::WebFrame* frame = blink::WebLocalFrame::create(this);
   parent->appendChild(frame);
   return frame;
diff --git a/chromium_src/chrome/renderer/printing/print_web_view_helper_linux.cc b/chromium_src/chrome/renderer/printing/print_web_view_helper_linux.cc
index 1fb3b260e0be..38bd9114d244 100644
--- a/chromium_src/chrome/renderer/printing/print_web_view_helper_linux.cc
+++ b/chromium_src/chrome/renderer/printing/print_web_view_helper_linux.cc
@@ -12,7 +12,6 @@
 #include "printing/page_size_margins.h"
 #include "printing/pdf_metafile_skia.h"
 #include "skia/ext/platform_device.h"
-#include "skia/ext/vector_canvas.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 
 #if !defined(OS_CHROMEOS) && !defined(OS_ANDROID)
diff --git a/chromium_src/chrome/renderer/printing/print_web_view_helper_mac.mm b/chromium_src/chrome/renderer/printing/print_web_view_helper_mac.mm
index e2ad3da5bc85..93fd06464b37 100644
--- a/chromium_src/chrome/renderer/printing/print_web_view_helper_mac.mm
+++ b/chromium_src/chrome/renderer/printing/print_web_view_helper_mac.mm
@@ -13,7 +13,6 @@
 #include "printing/metafile_skia_wrapper.h"
 #include "printing/page_size_margins.h"
 #include "skia/ext/platform_device.h"
-#include "skia/ext/vector_canvas.h"
 #include "third_party/WebKit/public/platform/WebCanvas.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 
diff --git a/chromium_src/chrome/renderer/printing/print_web_view_helper_pdf_win.cc b/chromium_src/chrome/renderer/printing/print_web_view_helper_pdf_win.cc
index c4bd9648905b..f98ee5097cca 100644
--- a/chromium_src/chrome/renderer/printing/print_web_view_helper_pdf_win.cc
+++ b/chromium_src/chrome/renderer/printing/print_web_view_helper_pdf_win.cc
@@ -14,7 +14,6 @@
 #include "printing/pdf_metafile_skia.h"
 #include "printing/units.h"
 #include "skia/ext/platform_device.h"
-#include "skia/ext/vector_canvas.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 
 
diff --git a/common.gypi b/common.gypi
index 4ae5e9e77c00..c6f3320c0a5b 100644
--- a/common.gypi
+++ b/common.gypi
@@ -115,28 +115,29 @@
                   'conditions': [
                     ['target_arch=="ia32"', {
                       'reference_symbols': [
-                        '_u_errorName_52',
-                        '_ubidi_setPara_52',
-                        '_ucsdet_getName_52',
-                        '_ulocdata_close_52',
-                        '_uregex_matches_52',
-                        '_uscript_getCode_52',
-                        '_usearch_setPattern_52',
-                        '?createInstance@Transliterator@icu_52@@SAPAV12@ABVUnicodeString@2@W4UTransDirection@@AAW4UErrorCode@@@Z',
-                        '?nameToUnicodeUTF8@IDNA@icu_52@@UBEXABVStringPiece@2@AAVByteSink@2@AAVIDNAInfo@2@AAW4UErrorCode@@@Z',
-                        '?kLineOffsetNotFound@Function@v8@@2HB',
+                        '_u_errorName_54',
+                        '_ubidi_setPara_54',
+                        '_ucsdet_getName_54',
+                        '_uidna_openUTS46_54',
+                        '_ulocdata_close_54',
+                        '_unorm_normalize_54',
+                        '_uregex_matches_54',
+                        '_uscript_getCode_54',
+                        '_usearch_setPattern_54',
+                        '?createInstance@Transliterator@icu_54@@SAPAV12@ABVUnicodeString@2@W4UTransDirection@@AAW4UErrorCode@@@Z',
                       ],
                     }, {
                       'reference_symbols': [
-                        'u_errorName_52',
-                        'ubidi_setPara_52',
-                        'ucsdet_getName_52',
-                        'uidna_openUTS46_52',
-                        'ulocdata_close_52',
-                        'uregex_matches_52',
-                        'uscript_getCode_52',
-                        'usearch_setPattern_52',
-                        '?createInstance@Transliterator@icu_52@@SAPEAV12@AEBVUnicodeString@2@W4UTransDirection@@AEAW4UErrorCode@@@Z'
+                        'u_errorName_54',
+                        'ubidi_setPara_54',
+                        'ucsdet_getName_54',
+                        'uidna_openUTS46_54',
+                        'ulocdata_close_54',
+                        'unorm_normalize_54',
+                        'uregex_matches_54',
+                        'uscript_getCode_54',
+                        'usearch_setPattern_54',
+                        '?createInstance@Transliterator@icu_54@@SAPEAV12@AEBVUnicodeString@2@W4UTransDirection@@AEAW4UErrorCode@@@Z',
                       ],
                     }],
                   ],
diff --git a/script/lib/config.py b/script/lib/config.py
index 7fb314ac9a27..ed050590ff9d 100644
--- a/script/lib/config.py
+++ b/script/lib/config.py
@@ -7,7 +7,7 @@ import sys
 
 
 BASE_URL = 'http://gh-contractor-zcbenz.s3.amazonaws.com/libchromiumcontent'
-LIBCHROMIUMCONTENT_COMMIT = 'f1ad1412461ba3345a27cfe935ffc872dba0ac5b'
+LIBCHROMIUMCONTENT_COMMIT = '0529dc17ca2f950b671cf12f82260cc397b4cebb'
 
 PLATFORM = {
   'cygwin': 'win32',
diff --git a/spec/api-app-spec.coffee b/spec/api-app-spec.coffee
index 1c88c0277b30..4e6bda2ac1fe 100644
--- a/spec/api-app-spec.coffee
+++ b/spec/api-app-spec.coffee
@@ -22,4 +22,4 @@ describe 'app module', ->
       assert.equal app.getName(), 'Electron Test'
       app.setName 'test-name'
       assert.equal app.getName(), 'test-name'
-      app.setName 'Electron Test App'
+      app.setName 'Electron Test'
diff --git a/vendor/brightray b/vendor/brightray
index e2539f3550dd..685435ae679a 160000
--- a/vendor/brightray
+++ b/vendor/brightray
@@ -1 +1 @@
-Subproject commit e2539f3550ddc58f1f4e826b5ff9691485003d39
+Subproject commit 685435ae679affcfcb095c546b3e884cbbc9f898