Blend TextureLayer background-color at draw time.

cc/layers/texture_layer.h

 // Copyright 2010 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 CC_LAYERS_TEXTURE_LAYER_H_
 #define CC_LAYERS_TEXTURE_LAYER_H_
 
 #include <string>
 
 #include "base/callback.h"
@@ skipping 39 matching lines @@
   // opacity value.
   void SetVertexOpacity(float bottom_left,
                         float top_left,
                         float top_right,
                         float bottom_right);
 
   // Sets whether the alpha channel is premultiplied or unpremultiplied.
   // Defaults to true.
   void SetPremultipliedAlpha(bool premultiplied_alpha);
 
+  // Sets whether the texture should be blended with the background color
+  // at draw time. Defaults to false.
+  void SetBlendBackgroundColor(bool blend);
+
   // Sets whether this context should rate limit on damage to prevent too many
   // frames from being queued up before the compositor gets a chance to run.
   // Requires a non-nil client.  Defaults to false.
   void SetRateLimitContext(bool rate_limit);
 
   // Code path for plugins which supply their own texture ID.
   void SetTextureId(unsigned texture_id);
 
   // Code path for plugins which supply their own mailbox.
   bool uses_mailbox() const { return uses_mailbox_; }
@@ skipping 63 matching lines @@
 
   TextureLayerClient* client_;
   bool uses_mailbox_;
 
   bool flipped_;
   gfx::PointF uv_top_left_;
   gfx::PointF uv_bottom_right_;
   // [bottom left, top left, top right, bottom right]
   float vertex_opacity_[4];
   bool premultiplied_alpha_;
+  bool blend_background_color_;
   bool rate_limit_context_;
   bool content_committed_;
 
   unsigned texture_id_;
   scoped_ptr<MailboxHolder::MainThreadReference> holder_ref_;
   bool needs_set_mailbox_;
 
   DISALLOW_COPY_AND_ASSIGN(TextureLayer);
 };
 
 }  // namespace cc
 #endif  // CC_LAYERS_TEXTURE_LAYER_H_