webview: add permission-request event

atom/browser/api/atom_api_web_contents.cc

@@ -14,6 +14,7 @@
 #include "atom/browser/atom_browser_context.h"
 #include "atom/browser/atom_browser_main_parts.h"
 #include "atom/browser/native_window.h"
+#include "atom/browser/web_contents_permission_helper.h"
 #include "atom/browser/web_contents_preferences.h"
 #include "atom/browser/web_view_guest_delegate.h"
 #include "atom/common/api/api_messages.h"
@@ -262,6 +263,9 @@ WebContents::WebContents(v8::Isolate* isolate,
   // Save the preferences in C++.
   new WebContentsPreferences(web_contents, options);
 
+  // Initialze permission helper.
+  new WebContentsPermissionHelper(web_contents, this);
+
   web_contents->SetUserAgentOverride(GetBrowserContext()->GetUserAgent());
 
   if (is_guest) {
@@ -444,6 +448,15 @@ void WebContents::FindReply(content::WebContents* web_contents,
   }
 }
 
+void WebContents::RequestMediaAccessPermission(
+    content::WebContents* web_contents,
+    const content::MediaStreamRequest& request,
+    const content::MediaResponseCallback& callback) {
+  auto permission_helper =
+      WebContentsPermissionHelper::FromWebContents(web_contents);
+  permission_helper->RequestMediaAccessPermission(request, callback);
+}
+
 void WebContents::BeforeUnloadFired(const base::TimeTicks& proceed_time) {
   // Do nothing, we override this method just to avoid compilation error since
   // there are two virtual functions named BeforeUnloadFired.

atom/browser/api/atom_api_web_contents.h

@@ -195,6 +195,10 @@ class WebContents : public mate::TrackableObject<WebContents>,
                  const gfx::Rect& selection_rect,
                  int active_match_ordinal,
                  bool final_update) override;
+  void RequestMediaAccessPermission(
+      content::WebContents* web_contents,
+      const content::MediaStreamRequest& request,
+      const content::MediaResponseCallback& callback) override;
 
   // content::WebContentsObserver:
   void BeforeUnloadFired(const base::TimeTicks& proceed_time) override;