Clamp YUV videos to their visible size in the shader

cc/output/shader.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_SHADER_H_
 #define CC_OUTPUT_SHADER_H_
 
 #include <string>
 
 #include "base/basictypes.h"
@@ skipping 658 matching lines @@
 
   void Init(gpu::gles2::GLES2Interface* context,
             unsigned program,
             int* base_uniform_index);
   int y_texture_location() const { return y_texture_location_; }
   int u_texture_location() const { return u_texture_location_; }
   int v_texture_location() const { return v_texture_location_; }
   int alpha_location() const { return alpha_location_; }
   int yuv_matrix_location() const { return yuv_matrix_location_; }
   int yuv_adj_location() const { return yuv_adj_location_; }
+  int clamp_rect_location() const { return clamp_rect_location_; }
 
  private:
   int y_texture_location_;
   int u_texture_location_;
   int v_texture_location_;
   int alpha_location_;
   int yuv_matrix_location_;
   int yuv_adj_location_;
+  int clamp_rect_location_;
 
   DISALLOW_COPY_AND_ASSIGN(FragmentShaderYUVVideo);
 };
 
 class FragmentShaderYUVAVideo : public FragmentTexBlendMode {
  public:
   FragmentShaderYUVAVideo();
   std::string GetShaderString(
       TexCoordPrecision precision, SamplerType sampler) const;
 
   void Init(gpu::gles2::GLES2Interface* context,
             unsigned program,
             int* base_uniform_index);
 
   int y_texture_location() const { return y_texture_location_; }
   int u_texture_location() const { return u_texture_location_; }
   int v_texture_location() const { return v_texture_location_; }
   int a_texture_location() const { return a_texture_location_; }
   int alpha_location() const { return alpha_location_; }
   int yuv_matrix_location() const { return yuv_matrix_location_; }
   int yuv_adj_location() const { return yuv_adj_location_; }
+  int clamp_rect_location() const { return clamp_rect_location_; }
 
  private:
   int y_texture_location_;
   int u_texture_location_;
   int v_texture_location_;
   int a_texture_location_;
   int alpha_location_;
   int yuv_matrix_location_;
   int yuv_adj_location_;
+  int clamp_rect_location_;
 
   DISALLOW_COPY_AND_ASSIGN(FragmentShaderYUVAVideo);
 };
 
 class FragmentShaderColor : public FragmentTexBlendMode {
  public:
   FragmentShaderColor();
   std::string GetShaderString(
       TexCoordPrecision precision, SamplerType sampler) const;
 
@@ skipping 44 matching lines @@
   int tex_transform_location_;
   int frequency_location_;
   int color_location_;
 
   DISALLOW_COPY_AND_ASSIGN(FragmentShaderCheckerboard);
 };
 
 }  // namespace cc
 
 #endif  // CC_OUTPUT_SHADER_H_