Rename the shared impl files.

ppapi/shared_impl/ppb_image_data_shared.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 PPAPI_SHARED_IMPL_IMAGE_DATA_IMPL_H_
-#define PPAPI_SHARED_IMPL_IMAGE_DATA_IMPL_H_
+#ifndef PPAPI_SHARED_IMPL_PPB_IMAGE_DATA_SHARED_H_
+#define PPAPI_SHARED_IMPL_PPB_IMAGE_DATA_SHARED_H_
 
 #include "ppapi/c/pp_bool.h"
 #include "ppapi/c/ppb_image_data.h"
 #include "ppapi/shared_impl/ppapi_shared_export.h"
 
 namespace ppapi {
 
 // Contains the implementation of some simple image data functions that are
 // shared between the proxy and Chrome's implementation. Since these functions
 // are just lists of what we support, it's much easier to just have the same
 // code run in the plugin process than to proxy it.
 //
 // It's possible the implementation will get more complex. In this case, it's
 // probably best to have some kind of "configuration" message that the renderer
 // sends to the plugin process on startup that contains all of these kind of
 // settings.
-class PPAPI_SHARED_EXPORT ImageDataImpl {
+class PPAPI_SHARED_EXPORT PPB_ImageData_Shared {
  public:
   static PP_ImageDataFormat GetNativeImageDataFormat();
   static bool IsImageDataFormatSupported(PP_ImageDataFormat format);
 };
 
 }  // namespace ppapi
 
-#endif  // PPAPI_SHARED_IMPL_IMAGE_DATA_IMPL_H_
+#endif  // PPAPI_SHARED_IMPL_PPB_IMAGE_DATA_SHARED_H_