Improve GL shader YUV adjustment.

cc/ipc/quads.mojom

 // Copyright 2014 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.
 
 module cc.mojom;
 
 import "cc/ipc/filter_operations.mojom";
 import "cc/ipc/render_pass_id.mojom";
 import "cc/ipc/surface_id.mojom";
 import "ui/gfx/geometry/mojo/geometry.mojom";
@@ skipping 75 matching lines @@
   gfx.mojom.RectF uv_tex_coord_rect;
   gfx.mojom.Size ya_tex_size;
   gfx.mojom.Size uv_tex_size;
   uint32 y_plane_resource_id;
   uint32 u_plane_resource_id;
   uint32 v_plane_resource_id;
   uint32 a_plane_resource_id;
   YUVColorSpace color_space;
   float resource_offset;
   float resource_multiplier;
+  uint32 bits_per_channel;

[piman, 2016/07/26 06:46:48]

You also need to modify the ParamTraits for YUVVideoDrawQuad in
src/cc/ipc/cc_param_traits_macros.h

 };
 
 enum Material {
   INVALID,
   DEBUG_BORDER,
   PICTURE_CONTENT,
   RENDER_PASS,
   SOLID_COLOR,
   STREAM_VIDEO_CONTENT,
   SURFACE_CONTENT,
@@ skipping 38 matching lines @@
   TileQuadState? tile_quad_state;
   StreamVideoQuadState? stream_video_quad_state;
   YUVVideoQuadState? yuv_video_quad_state;
 };
 
 struct QuadList {
   array<Material> quad_types;
   array<DrawQuad> quads;
 };