Towards moving guest management to chrome: Introduce GuestViewManager

content/browser/browser_plugin/browser_plugin_embedder.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.
 
 // A BrowserPluginEmbedder handles messages coming from a BrowserPlugin's
 // embedder that are not directed at any particular existing guest process.
 // In the beginning, when a BrowserPlugin instance in the embedder renderer
 // process requests an initial navigation, the WebContents for that renderer
 // renderer creates a BrowserPluginEmbedder for itself. The
 // BrowserPluginEmbedder, in turn, forwards the requests to a
@@ skipping 27 matching lines @@
 class WebContentsImpl;
 struct NativeWebKeyboardEvent;
 
 class CONTENT_EXPORT BrowserPluginEmbedder : public WebContentsObserver {
  public:
   virtual ~BrowserPluginEmbedder();
 
   static BrowserPluginEmbedder* Create(WebContentsImpl* web_contents);
 
   // Returns this embedder's WebContentsImpl.
-  WebContentsImpl* GetWebContents();
+  WebContentsImpl* GetWebContents() const;
 
   // Called when embedder's |rwh| has sent screen rects to renderer.
   void DidSendScreenRects();
 
   // Called when embedder's WebContentsImpl has unhandled keyboard input.
   // Returns whether the BrowserPlugin has handled the keyboard event.
   // Currently we are only interested in checking for the escape key to
   // unlock hte guest's pointer lock.
   bool HandleKeyboardEvent(const NativeWebKeyboardEvent& event);
 
@@ skipping 20 matching lines @@
 
   void StartDrag(BrowserPluginGuest* guest);
 
   // Sends EndSystemDrag message to the guest that initiated the last drag/drop
   // operation, if there's any.
   void SystemDragEnded();
 
  private:
   friend class TestBrowserPluginEmbedder;
 
-  BrowserPluginEmbedder(WebContentsImpl* web_contents);
+  explicit BrowserPluginEmbedder(WebContentsImpl* web_contents);
 
-  BrowserPluginGuestManager* GetBrowserPluginGuestManager();
+  BrowserPluginGuestManager* GetBrowserPluginGuestManager() const;
 
   bool DidSendScreenRectsCallback(BrowserPluginGuest* guest);
 
   bool SetZoomLevelCallback(double level, BrowserPluginGuest* guest);
 
   bool UnlockMouseIfNecessaryCallback(const NativeWebKeyboardEvent& event,
                                       BrowserPluginGuest* guest);
 
   // Message handlers.
 
@@ skipping 12 matching lines @@
   // handle a race condition when dropping onto the guest that started the drag
   // (the race is that the dragend message arrives before the drop message so
   // the drop never takes place).
   // crbug.com/233571
   base::WeakPtr<BrowserPluginGuest> guest_dragging_over_;
 
   // Pointer to the guest that started the drag, used to forward necessary drag
   // status messages to the correct guest.
   base::WeakPtr<BrowserPluginGuest> guest_started_drag_;
 
+  base::WeakPtrFactory<BrowserPluginEmbedder> weak_ptr_factory_;
+
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginEmbedder);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_EMBEDDER_H_