Embed Flash Fullscreen widget within browser window.

content/public/browser/web_contents_delegate.h

Index: content/public/browser/web_contents_delegate.h
diff --git a/content/public/browser/web_contents_delegate.h b/content/public/browser/web_contents_delegate.h
index e31828b2ec9c79e2e511e62724f06c4f521fc4e7..160cc8140534329576b4fcfa53306599b36feb22 100644
--- a/content/public/browser/web_contents_delegate.h
+++ b/content/public/browser/web_contents_delegate.h
@@ -348,6 +348,13 @@ class CONTENT_EXPORT WebContentsDelegate {
                                   int request_id,
                                   const base::FilePath& path) {}
 
+  // Returns true if the delegate will embed a WebContents-owned fullscreen
+  // render widget.  In this case, ToggleFullscreenModeForTab() is used to enter

[jam, 2013/09/11 02:48:26]

nit: don't mention what chrome code does in src/content, as that's a (comment)
layering violation

[miu, 2013/09/11 03:57:03]

Done.

+  // fullscreen mode and the browser view will access the widget by calling
+  // WebContents::GetFullscreenRenderWidgetHostView().  If false is returned,
+  // WebContents will be responsible for showing the fullscreen widget.
+  virtual bool EmbedsFullscreenWidget() const;
+
   // Called when the renderer puts a tab into or out of fullscreen mode.
   virtual void ToggleFullscreenModeForTab(WebContents* web_contents,
                                           bool enter_fullscreen) {}