Move NPAPI implementation out of webkit/plugins/npapi and into content.

webkit/plugins/npapi/webplugin_accelerated_surface_mac.h

-// Copyright (c) 2011 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 WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_ACCELERATED_SURFACE_MAC_H_
-#define WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_ACCELERATED_SURFACE_MAC_H_
-
-#include "ui/gfx/native_widget_types.h"
-#include "ui/gfx/size.h"
-
-// Avoid having to include OpenGL headers here.
-typedef struct _CGLContextObject* CGLContextObj;
-
-namespace webkit {
-namespace npapi {
-
-// Interface class for interacting with an accelerated plugin surface, used
-// for the Core Animation flavors of plugin drawing on the Mac.
-class WebPluginAcceleratedSurface {
- public:
-  virtual ~WebPluginAcceleratedSurface() {}
-
-  // Sets the size of the surface.
-  virtual void SetSize(const gfx::Size& size) = 0;
-
-  // Returns the context used to draw into this surface.
-  // If initializing the surface failed, this will be NULL.
-  virtual CGLContextObj context() = 0;
-
-  // Readies the surface for drawing. Must be called before any drawing session.
-  virtual void StartDrawing() = 0;
-
-  // Ends a drawing session. Changes to the surface may not be reflected until
-  // this is called.
-  virtual void EndDrawing() = 0;
-};
-
-}  // namespace npapi
-}  // namespace webkit
-
-#endif  // WEBKIT_PLUGINS_NPAPI_WEBPLUGIN_ACCELERATED_SURFACE_MAC_H_