Clean up Pepper ImageData resource class.

webkit/plugins/ppapi/ppb_image_data_impl.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.
 
 #ifndef WEBKIT_PLUGINS_PPAPI_PPB_IMAGE_DATA_IMPL_H_
 #define WEBKIT_PLUGINS_PPAPI_PPB_IMAGE_DATA_IMPL_H_
 
 #include "base/basictypes.h"
 #include "base/memory/scoped_ptr.h"
 #include "ppapi/c/ppb_image_data.h"
@@ skipping 45 matching lines @@
             bool init_to_zero);
 
   // Create an ImageData backed by a PlatformCanvas. You must use this if you
   // intend the ImageData to be usable in platform-specific APIs (like font
   // rendering or rendering widgets like scrollbars).
   static PP_Resource CreatePlatform(PP_Instance pp_instance,
                                     PP_ImageDataFormat format,
                                     const PP_Size& size,
                                     PP_Bool init_to_zero);
 
-  // Use this to create an ImageData for use with NaCl. This is backed by a
-  // simple shared memory buffer.
-  static PP_Resource CreateNaCl(PP_Instance pp_instance,
-                                PP_ImageDataFormat format,
-                                const PP_Size& size,
-                                PP_Bool init_to_zero);
+  // Use this to create an ImageData when access to the platform-specific canvas
+  // isn't required. This is backed by a simple shared memory buffer. This is
+  // the only kind of ImageData that can be used by NaCl plugins.
+  static PP_Resource CreateSimple(PP_Instance pp_instance,
+                                  PP_ImageDataFormat format,
+                                  const PP_Size& size,
+                                  PP_Bool init_to_zero);
 
   int width() const { return width_; }
   int height() const { return height_; }
 
   // Returns the image format.
   PP_ImageDataFormat format() const { return format_; }
 
   // Returns true if this image is mapped. False means that the image is either
   // invalid or not mapped. See ImageDataAutoMapper below.
   bool IsMapped() const;
@@ skipping 113 matching lines @@
   bool is_valid_;
   bool needs_unmap_;
 
   DISALLOW_COPY_AND_ASSIGN(ImageDataAutoMapper);
 };
 
 }  // namespace ppapi
 }  // namespace webkit
 
 #endif  // WEBKIT_PLUGINS_PPAPI_PPB_IMAGE_DATA_IMPL_H_