Raise an infobar and deny access to WebGL if a GPU reset was detected while a web page containing W…

content/public/browser/web_contents_observer.h

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_
 
 #include "base/callback_forward.h"
 #include "base/process_util.h"
 #include "content/common/content_export.h"
 #include "content/public/browser/navigation_controller.h"
 #include "content/public/common/page_transition_types.h"
+#include "content/public/common/three_d_api_types.h"
 #include "ipc/ipc_listener.h"
 #include "ipc/ipc_sender.h"
 #include "webkit/glue/window_open_disposition.h"
 
 namespace content {
 
 class RenderViewHost;
 class WebContents;
 class WebContentsImpl;
 struct FrameNavigateParams;
@@ skipping 119 matching lines @@
   // with the result. Otherwise it should return false, in which case the next
   // observer will be called.
   // Implementations should make sure not to call the callback after the
   // WebContents has been destroyed.
   virtual bool RequestPpapiBrokerPermission(
       WebContents* web_contents,
       const GURL& url,
       const FilePath& plugin_path,
       const base::Callback<void(bool)>& callback);
 
+  // Indicates that client 3D APIs (Pepper 3D, WebGL) were just
+  // blocked on the current page, specifically because the GPU was
+  // reset recently. If this object handles the request, it should

[jam, 2012/11/15 16:57:25]

nit: just stop this comment at the period. the content api shouldn't document
what chrome does in response to a call

[Ken Russell (switch to Gerrit), 2012/11/15 20:53:25]

Done.

+  // have the side-effect of raising an infobar to prompt the user
+  // whether they want to run the content (if so, causing the page to
+  // reload).
+  virtual void DidBlock3DAPIs(const GURL& url,
+                              ThreeDAPIType requester) {}
+
   // IPC::Listener implementation.
   virtual bool OnMessageReceived(const IPC::Message& message) OVERRIDE;
 
   // IPC::Sender implementation.
   virtual bool Send(IPC::Message* message) OVERRIDE;
   int routing_id() const;
 
  protected:
   // Use this constructor when the object is tied to a single WebContents for
   // its entire lifetime.
@@ skipping 19 matching lines @@
   void WebContentsImplDestroyed();
 
   WebContentsImpl* web_contents_;
 
   DISALLOW_COPY_AND_ASSIGN(WebContentsObserver);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_OBSERVER_H_