diff --git a/atom/browser/atom_browser_client.cc b/atom/browser/atom_browser_client.cc
index c83a99c2b387..69fd274f6e80 100644
--- a/atom/browser/atom_browser_client.cc
+++ b/atom/browser/atom_browser_client.cc
@@ -33,6 +33,7 @@
 #include "chrome/browser/speech/tts_message_filter.h"
 #include "content/public/browser/browser_ppapi_host.h"
 #include "content/public/browser/client_certificate_delegate.h"
+#include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/resource_dispatcher_host.h"
diff --git a/atom/browser/native_window.cc b/atom/browser/native_window.cc
index 05149171663f..2fdcbd75ee55 100644
--- a/atom/browser/native_window.cc
+++ b/atom/browser/native_window.cc
@@ -8,35 +8,12 @@
 #include <utility>
 #include <vector>
 
-#include "atom/browser/atom_browser_context.h"
-#include "atom/browser/atom_browser_main_parts.h"
 #include "atom/browser/browser.h"
 #include "atom/browser/window_list.h"
 #include "atom/common/color_util.h"
-#include "atom/common/native_mate_converters/file_path_converter.h"
 #include "atom/common/options_switches.h"
-#include "base/files/file_util.h"
-#include "base/json/json_writer.h"
-#include "base/message_loop/message_loop.h"
-#include "base/strings/utf_string_conversions.h"
-#include "base/threading/thread_task_runner_handle.h"
 #include "brightray/browser/inspectable_web_contents.h"
-#include "brightray/browser/inspectable_web_contents_view.h"
-#include "components/prefs/pref_service.h"
-#include "content/public/browser/navigation_entry.h"
-#include "content/public/browser/plugin_service.h"
-#include "content/public/browser/render_process_host.h"
-#include "content/public/browser/render_view_host.h"
-#include "content/public/browser/render_widget_host.h"
-#include "content/public/browser/render_widget_host_view.h"
-#include "content/public/common/content_switches.h"
-#include "ipc/ipc_message_macros.h"
 #include "native_mate/dictionary.h"
-#include "ui/gfx/codec/png_codec.h"
-#include "ui/gfx/geometry/point.h"
-#include "ui/gfx/geometry/rect.h"
-#include "ui/gfx/geometry/size.h"
-#include "ui/gfx/geometry/size_conversions.h"
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(atom::NativeWindowRelay);
 
@@ -46,8 +23,7 @@ NativeWindow::NativeWindow(
     brightray::InspectableWebContents* inspectable_web_contents,
     const mate::Dictionary& options,
     NativeWindow* parent)
-    : content::WebContentsObserver(inspectable_web_contents->GetWebContents()),
-      has_frame_(true),
+    : has_frame_(true),
       transparent_(false),
       enable_larger_than_screen_(false),
       is_closed_(false),
diff --git a/atom/browser/native_window.h b/atom/browser/native_window.h
index c0a65ef67550..5bec3be26387 100644
--- a/atom/browser/native_window.h
+++ b/atom/browser/native_window.h
@@ -11,20 +11,13 @@
 #include <vector>
 
 #include "atom/browser/native_window_observer.h"
-#include "atom/browser/ui/accelerator_util.h"
 #include "atom/browser/ui/atom_menu_model.h"
 #include "base/memory/weak_ptr.h"
 #include "base/observer_list.h"
 #include "base/supports_user_data.h"
-#include "content/public/browser/readback_types.h"
-#include "content/public/browser/render_frame_host.h"
-#include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
 #include "extensions/browser/app_window/size_constraints.h"
 #include "native_mate/persistent_dictionary.h"
-#include "ui/gfx/geometry/rect_f.h"
-#include "ui/gfx/image/image.h"
-#include "ui/gfx/image/image_skia.h"
 
 class SkRegion;
 
@@ -37,8 +30,10 @@ struct NativeWebKeyboardEvent;
 }
 
 namespace gfx {
+class Image;
 class Point;
 class Rect;
+class RectF;
 class Size;
 }
 
@@ -52,8 +47,7 @@ class NativeBrowserView;
 
 struct DraggableRegion;
 
-class NativeWindow : public base::SupportsUserData,
-                     public content::WebContentsObserver {
+class NativeWindow : public base::SupportsUserData {
  public:
   ~NativeWindow() override;