<webview>: First stab at implementing media permission request for guests.

content/renderer/browser_plugin/browser_plugin.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_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 #define  CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_
 
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebPlugin.h"
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 100 matching lines @@
   void Go(int relativeIndex);
   // Tells the BrowserPlugin to terminate the guest process.
   void TerminateGuest();
 
   // A request from Javascript has been made to stop the loading of the page.
   void Stop();
   // A request from Javascript has been made to reload the page.
   void Reload();
   // A request to enable hardware compositing.
   void EnableCompositing(bool enable);
+  // A request from shim to track lifetime of a js object related to media
+  // access request object.
+  // This is used to clean up hanging media requests.
+  void PersistRequestObject(const NPVariant* request, int id);
 
   // Returns true if |point| lies within the bounds of the plugin rectangle.
   // Not OK to use this function for making security-sensitive decision since it
   // can return false positives when the plugin has rotation transformation
   // applied.
   bool InBounds(const gfx::Point& point) const;
 
   gfx::Point ToLocalCoordinates(const gfx::Point& point) const;
+  // Called by browser plugin binding.
+  void OnListenerCallMediaAccess(int request_id, bool allow);
+
 
   // WebKit::WebPlugin implementation.
   virtual WebKit::WebPluginContainer* container() const OVERRIDE;
   virtual bool initialize(WebKit::WebPluginContainer* container) OVERRIDE;
   virtual void destroy() OVERRIDE;
   virtual NPObject* scriptableObject() OVERRIDE;
   virtual bool supportsKeyboardFocus() const OVERRIDE;
   virtual bool canProcessDrag() const OVERRIDE;
   virtual void paint(
       WebKit::WebCanvas* canvas,
@@ skipping 97 matching lines @@
   void GetDamageBufferWithSizeParams(
       BrowserPluginHostMsg_AutoSize_Params* auto_size_params,
       BrowserPluginHostMsg_ResizeGuest_Params* resize_guest_params);
 
   // Informs the guest of an updated autosize state.
   void UpdateGuestAutoSizeState(bool current_auto_size);
 
   // Informs the BrowserPlugin that guest has changed its size in autosize mode.
   void SizeChangedDueToAutoSize(const gfx::Size& old_view_size);
 
+  bool HasEventListeners(const std::string& event_name);
+
   // Indicates whether a damage buffer was used by the guest process for the
   // provided |params|.
   static bool UsesDamageBuffer(
       const BrowserPluginMsg_UpdateRect_Params& params);
 
   // Indicates whether the |pending_damage_buffer_| was used to copy over pixels
   // given the provided |params|.
   bool UsesPendingDamageBuffer(
       const BrowserPluginMsg_UpdateRect_Params& params);
 
@@ skipping 24 matching lines @@
                       const GURL& old_url,
                       const GURL& new_url,
                       bool is_top_level);
   void OnLoadStart(int instance_id, const GURL& url, bool is_top_level);
   void OnLoadStop(int instance_id);
   void OnSetCursor(int instance_id, const WebCursor& cursor);
   void OnShouldAcceptTouchEvents(int instance_id, bool accept);
   void OnUpdatedName(int instance_id, const std::string& name);
   void OnUpdateRect(int instance_id,
                     const BrowserPluginMsg_UpdateRect_Params& params);
+  // Requests media access permission from the embedder.
+  void OnRequestMediaAccess(int instance_id,
+                            int request_id,
+                            const GURL& security_origin);
+  // Informs the BrowserPlugin that the guest's request for media access has
+  // been allowed or denied by the embedder.
+  void RespondMediaAccess(int request_id, bool allow);
+
+  void RespondMediaAccessIfPending(int request_id, bool allow);
+  void OnMediaRequestGarbageCollected(int request_id);
+  static void WeakCallbackForPersistObject(v8::Persistent<v8::Value> object,
+                                           void* param);
 
   int instance_id_;
   base::WeakPtr<RenderViewImpl> render_view_;
   // We cache the |render_view_|'s routing ID because we need it on destruction.
   // If the |render_view_| is destroyed before the BrowserPlugin is destroyed
   // then we will attempt to access a NULL pointer.
   int render_view_routing_id_;
   WebKit::WebPluginContainer* container_;
   scoped_ptr<BrowserPluginBindings> bindings_;
   scoped_ptr<BrowserPluginBackingStore> backing_store_;
@@ skipping 18 matching lines @@
   bool plugin_focused_;
   // Tracks the visibility of the browser plugin regardless of the whole
   // embedder RenderView's visibility.
   bool visible_;
 
   WebCursor cursor_;
 
   gfx::Size last_view_size_;
   bool size_changed_in_flight_;
   bool allocate_instance_id_sent_;
+  typedef std::set<int> MediaAccessPendingRequestIds;
+  MediaAccessPendingRequestIds media_access_pending_request_ids_;
+
+  typedef std::pair<int*, BrowserPlugin*> MediaAccessAliveV8RequestItem;
+  std::map<int, MediaAccessAliveV8RequestItem*>
+      media_access_alive_v8_request_objects_;
 
   // BrowserPlugin outlives RenderViewImpl in Chrome Apps and so we need to
   // store the BrowserPlugin's BrowserPluginManager in a member variable to
   // avoid accessing the RenderViewImpl.
   scoped_refptr<BrowserPluginManager> browser_plugin_manager_;
 
   // Important: Do not add more history state here.
   // We strongly discourage storing additional history state (such as page IDs)
   // in the embedder process, at the risk of having incorrect information that
   // can lead to broken back/forward logic in apps.
   // It's also important that this state does not get modified by any logic in
   // the embedder process. It should only be updated in response to navigation
   // events in the guest.  No assumptions should be made about how the index
   // will change after a navigation (e.g., for back, forward, or go), because
   // the changes are not always obvious.  For example, there is a maximum
   // number of entries and earlier ones will automatically be pruned.
   int current_nav_entry_index_;
   int nav_entry_count_;
 
   // Used for HW compositing.
   bool compositing_enabled_;
   scoped_refptr<BrowserPluginCompositingHelper> compositing_helper_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPlugin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_RENDERER_BROWSER_PLUGIN_BROWSER_PLUGIN_H_