Delete athena/

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 "content/public/browser/readback_types.h"
-#include "ui/gfx/image/image_skia.h"
-
-namespace views {
-class WebView;
-}
-
-namespace athena {
-
-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.
-  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();
-
-  // Can be called to save resources by creating a layer with a solid color
-  // instead of creating a content image layer.
-  // Note: Currently the GPU does create a full size texture and fills it with
-  // the given color - so there isn't really memory savings yet.
-  void EvictContent();
-
-  // Get the image of the content. If there is no image known, an empty image
-  // will be returned.
-  gfx::ImageSkia GetContentImage();
-
-  // The content is about to get destroyed by its creator.
-  // Note: This function should only be used by AppActivity.
-  void OnPreContentDestroyed();
-
- private:
-  // Make the original (web)content visible. This call should only be paired
-  // with HideOriginalContent.
-  void ShowOriginalContent();
-
-  // Make the content invisible. This call should only be paired with
-  // MakeVisible.
-  void HideOriginalContent();
-
-  // Creates proxy content from |web_view_|.
-  void CreateProxyContent();
-
-  // Creates an image from the current content.
-  bool CreateContentImage();
-
-  // Called once the content was read back.
-  void OnContentImageRead(const SkBitmap& bitmap,
-                          content::ReadbackResponse response);
-
-  // Called once the image content has been converted to PNG.
-  void OnContentImageEncodeComplete(scoped_refptr<ProxyImageData> image);
-
-  // The web view which was passed on creation and is associated with this
-  // object. It will be shown when OnPreContentDestroyed() gets called and then
-  // set to nullptr. The ownership remains with the creator.
-  views::WebView* web_view_;
-
-  // While we are doing our PNG encode, we keep the read back image to have
-  // something which we can pass back to the overview mode. (It would make no
-  // sense to the user to see that more recent windows get painted later than
-  // older ones).
-  gfx::ImageSkia raw_image_;
-
-  // True if the content is visible.
-  bool content_visible_;
-
-  // True if the content is loaded and needs a re-layout when it gets shown
-  // again.
-  bool content_loaded_;
-
-  // True if a content creation was kicked off once. This ensures that the
-  // function is never called twice.
-  bool content_creation_called_;
-
-  // The PNG image data.
-  scoped_refptr<base::RefCountedBytes> png_data_;
-
-  // Creating an encoded image from the content will be asynchronous. Use a
-  // 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_