Fix HTML5 video blurry

cc/output/gl_renderer_draw_cache.h

Index: cc/output/gl_renderer_draw_cache.h
diff --git a/cc/output/gl_renderer_draw_cache.h b/cc/output/gl_renderer_draw_cache.h
index e02b73b4e381c10bb02decbd40ac0ee00ebce184..b083ff02a8154949a463776b55250cadaa217143 100644
--- a/cc/output/gl_renderer_draw_cache.h
+++ b/cc/output/gl_renderer_draw_cache.h
@@ -38,6 +38,7 @@ struct TexturedQuadDrawCache {
 
   // Information about the program binding that is required to draw.
   int uv_xform_location;
+  int tex_clamp_rect_location = -1;
   int background_color_location;
   int vertex_opacity_location;
   int matrix_location;
@@ -45,6 +46,7 @@ struct TexturedQuadDrawCache {
 
   // A cache for the coalesced quad data.
   std::vector<Float4> uv_xform_data;
+  std::vector<Float4> tex_clamp_rect_data;
   std::vector<float> vertex_opacity_data;
   std::vector<Float16> matrix_data;