Clamp YUV videos to their visible size in the shader

cc/output/shader.h

Index: cc/output/shader.h
diff --git a/cc/output/shader.h b/cc/output/shader.h
index 8c1f2647946906b1a87ce00618b3ba3384c020ca..5adca47de80d507af6c0acec6f60c45d5331f5ff 100644
--- a/cc/output/shader.h
+++ b/cc/output/shader.h
@@ -676,6 +676,7 @@ class FragmentShaderYUVVideo : public FragmentTexBlendMode {
   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_;
@@ -684,6 +685,7 @@ class FragmentShaderYUVVideo : public FragmentTexBlendMode {
   int alpha_location_;
   int yuv_matrix_location_;
   int yuv_adj_location_;
+  int clamp_rect_location_;
 
   DISALLOW_COPY_AND_ASSIGN(FragmentShaderYUVVideo);
 };
@@ -705,6 +707,7 @@ class FragmentShaderYUVAVideo : public FragmentTexBlendMode {
   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_;
@@ -714,6 +717,7 @@ class FragmentShaderYUVAVideo : public FragmentTexBlendMode {
   int alpha_location_;
   int yuv_matrix_location_;
   int yuv_adj_location_;
+  int clamp_rect_location_;
 
   DISALLOW_COPY_AND_ASSIGN(FragmentShaderYUVAVideo);
 };