Add distinction between RGB and RGBA native texture video frames and resources

cc/layers/video_layer_impl.cc

 // 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.
 
 #include "cc/layers/video_layer_impl.h"
 
 #include "base/bind.h"
 #include "base/logging.h"
 #include "cc/layers/video_frame_provider_client_impl.h"
 #include "cc/quads/io_surface_draw_quad.h"
@@ skipping 236 matching lines @@
       YUVVideoDrawQuad* yuv_video_quad =
           render_pass->CreateAndAppendDrawQuad<YUVVideoDrawQuad>();
       yuv_video_quad->SetNew(
           shared_quad_state, quad_rect, opaque_rect, visible_quad_rect,
           tex_coord_rect, ya_tex_size, uv_tex_size, frame_resources_[0],
           frame_resources_[1], frame_resources_[2],
           frame_resources_.size() > 3 ? frame_resources_[3] : 0, color_space);
       ValidateQuadResources(yuv_video_quad);
       break;
     }
+    case VideoFrameExternalResources::RGBA_RESOURCE:
     case VideoFrameExternalResources::RGB_RESOURCE: {
       DCHECK_EQ(frame_resources_.size(), 1u);
       if (frame_resources_.size() < 1u)
         break;
-      bool premultiplied_alpha = true;
+      bool premultiplied_alpha =
+          (frame_resource_type_ == VideoFrameExternalResources::RGBA_RESOURCE);
       gfx::PointF uv_top_left(0.f, 0.f);
       gfx::PointF uv_bottom_right(tex_width_scale, tex_height_scale);
       float opacity[] = {1.0f, 1.0f, 1.0f, 1.0f};
       bool flipped = false;
       bool nearest_neighbor = false;
       TextureDrawQuad* texture_quad =
           render_pass->CreateAndAppendDrawQuad<TextureDrawQuad>();
       texture_quad->SetNew(shared_quad_state,
                            quad_rect,
                            opaque_rect,
@@ skipping 104 matching lines @@
 void VideoLayerImpl::SetNeedsRedraw() {
   SetUpdateRect(gfx::UnionRects(update_rect(), gfx::Rect(bounds())));
   layer_tree_impl()->SetNeedsRedraw();
 }
 
 const char* VideoLayerImpl::LayerTypeAsString() const {
   return "cc::VideoLayerImpl";
 }
 
 }  // namespace cc