Move a bunch more code into the content namespace.

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 has a list of guests it manages.
 // In the beginning when a renderer sees one or more guests (BrowserPlugin
 // instance(s)) and there is a request to navigate to them, the WebContents for
 // that renderer creates a BrowserPluginEmbedder for itself. The
 // BrowserPluginEmbedder, in turn, manages a set of BrowserPluginGuests -- one
 // BrowserPluginGuest for each guest in the embedding WebContents. Note that
@@ skipping 13 matching lines @@
 
 #include "base/compiler_specific.h"
 #include "content/public/browser/notification_observer.h"
 #include "content/public/browser/notification_registrar.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDragStatus.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDragOperation.h"
 #include "ui/surface/transport_dib.h"
 #include "webkit/glue/webdropdata.h"
 
-class WebContentsImpl;
 struct BrowserPluginHostMsg_ResizeGuest_Params;
 
 namespace WebKit {
 class WebInputEvent;
 }
 
 namespace gfx {
 class Point;
 class Rect;
 class Size;
 }
 
 namespace content {
 
 class BrowserPluginGuest;
 class BrowserPluginHostFactory;
+class WebContentsImpl;
 
 // A browser plugin embedder provides functionality for WebContents to operate
 // in the 'embedder' role. It manages list of guests inside the embedder.
 //
 // The embedder's WebContents manages the lifetime of the embedder. They are
 // created when a renderer asks WebContents to navigate (for the first time) to
 // some guest. It gets destroyed when either the WebContents goes away or there
 // is a RenderViewHost swap in WebContents.
 class CONTENT_EXPORT BrowserPluginEmbedder : public WebContentsObserver,
                                              public NotificationObserver {
@@ skipping 95 matching lines @@
   ContainerInstanceMap guest_web_contents_by_instance_id_;
   RenderViewHost* render_view_host_;
   bool visible_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserPluginEmbedder);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_BROWSER_PLUGIN_BROWSER_PLUGIN_EMBEDDER_H_