Background filters are affected by masks

cc/output/program_binding.h

 // Copyright 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 CC_OUTPUT_PROGRAM_BINDING_H_
 #define CC_OUTPUT_PROGRAM_BINDING_H_
 
 #include <string>
 
 #include "base/logging.h"
@@ skipping 41 matching lines @@
 };
 
 template <class VertexShader, class FragmentShader>
 class ProgramBinding : public ProgramBindingBase {
  public:
   ProgramBinding() {}
 
   void Initialize(ContextProvider* context_provider,
                   TexCoordPrecision precision,
                   SamplerType sampler,
-                  BlendMode blend_mode = BLEND_MODE_NONE) {
+                  BlendMode blend_mode = BLEND_MODE_NONE,
+                  bool mask_for_background = false) {

[enne (OOO), 2015/03/04 19:58:44]

style nit: no default parameters in Chromium.

     DCHECK(context_provider);
     DCHECK(!initialized_);
 
     if (context_provider->IsContextLost())
       return;
 
     fragment_shader_.set_blend_mode(blend_mode);
+    fragment_shader_.set_mask_for_background(mask_for_background);
 
     if (!ProgramBindingBase::Init(
             context_provider->ContextGL(),
             vertex_shader_.GetShaderString(),
             fragment_shader_.GetShaderString(precision, sampler))) {
       DCHECK(context_provider->IsContextLost());
       return;
     }
 
     int base_uniform_index = 0;
@@ skipping 17 matching lines @@
  private:
   VertexShader vertex_shader_;
   FragmentShader fragment_shader_;
 
   DISALLOW_COPY_AND_ASSIGN(ProgramBinding);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_PROGRAM_BINDING_H_