Remove Activity dependency from content_proxy

athena/content/content_proxy.h

 // Copyright 2014 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 ATHENA_CONTENT_CONTENT_PROXY_H_
 #define ATHENA_CONTENT_CONTENT_PROXY_H_
 
 #include "base/macros.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/memory/scoped_ptr.h"
 #include "base/memory/weak_ptr.h"
 #include "ui/gfx/image/image_skia.h"
 
 namespace views {
 class WebView;
 }
 
 namespace athena {
 
-class Activity;
 class ProxyImageData;
 
 // This object creates and holds proxy content which gets shown instead of the
 // actual web content, generated from the passed |web_view|.
 // The created |proxy_content_| will be destroyed with the destruction of this
 // object.
 // Calling EvictContent() will release the rendered content.
 // When ContentGetsDestroyed() gets called, the old view will be made visible
 // and then the link to the |web_view_| will get severed.
 class ContentProxy {
  public:
-  // Creates the object by creating a sized down |web_view| layer and making it
-  // visible inside |activity|'s window.
-  ContentProxy(views::WebView* web_view, Activity* activity);
+  // Creates the object by creating a sized down |web_view| layer.
+  explicit ContentProxy(views::WebView* web_view);
   // TODO(skuhne): Add a function to create this object from a passed PNG, so
   // that we can create it from a session restore.
 
   // With the destruction of the object, the layer should get destroyed and the
   // content should become visible again.
   virtual ~ContentProxy();
 
   // Called when the content will get unloaded.
   void ContentWillUnload();
 
@@ skipping 61 matching lines @@
   // weakptr for the callback to make sure that the read back / encoding image
   // completion callback does not trigger on a destroyed ContentProxy.
   base::WeakPtrFactory<ContentProxy> proxy_content_to_image_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(ContentProxy);
 };
 
 }  // namespace athena
 
 #endif  // ATHENA_CONTENT_CONTENT_PROXY_H_