Blend TextureLayer background-color at draw time.

cc/layers/texture_layer.h

Index: cc/layers/texture_layer.h
diff --git a/cc/layers/texture_layer.h b/cc/layers/texture_layer.h
index e3132fd1c60384dd226cc39135d51ddfeb927ea4..8cdf484bb77ce453d21e2f0fedd8a52313edafa9 100644
--- a/cc/layers/texture_layer.h
+++ b/cc/layers/texture_layer.h
@@ -57,6 +57,10 @@ class CC_EXPORT TextureLayer : public Layer {
   // 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.
@@ -140,6 +144,7 @@ class CC_EXPORT TextureLayer : public Layer {
   // [bottom left, top left, top right, bottom right]
   float vertex_opacity_[4];
   bool premultiplied_alpha_;
+  bool blend_background_color_;
   bool rate_limit_context_;
   bool context_lost_;
   bool content_committed_;