cc: Remove opaque flags from SharedQuadState and DrawQuad

cc/heads_up_display_layer_impl.cc

 // Copyright 2012 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/heads_up_display_layer_impl.h"
 
 #include <limits>
 
 #include "base/stringprintf.h"
 #include "cc/debug_colors.h"
@@ skipping 73 matching lines @@
 }
 
 void HeadsUpDisplayLayerImpl::appendQuads(QuadSink& quadSink, AppendQuadsData& appendQuadsData)
 {
     if (!m_hudTexture->id())
         return;
 
     SharedQuadState* sharedQuadState = quadSink.useSharedQuadState(createSharedQuadState());
 
     gfx::Rect quadRect(gfx::Point(), bounds());
+    gfx::Rect opaqueRect(contentsOpaque() ? quadRect : gfx::Rect());
     bool premultipliedAlpha = true;
     gfx::RectF uvRect(0, 0, 1, 1);
     bool flipped = false;
-    quadSink.append(TextureDrawQuad::create(sharedQuadState, quadRect, m_hudTexture->id(), premultipliedAlpha, uvRect, flipped).PassAs<DrawQuad>(), appendQuadsData);
+    quadSink.append(TextureDrawQuad::create(sharedQuadState, quadRect, opaqueRect, m_hudTexture->id(), premultipliedAlpha, uvRect, flipped).PassAs<DrawQuad>(), appendQuadsData);
 }
 
 void HeadsUpDisplayLayerImpl::updateHudTexture(ResourceProvider* resourceProvider)
 {
     if (!m_hudTexture->id())
         return;
 
     SkISize canvasSize;
     if (m_hudCanvas)
         canvasSize = m_hudCanvas->getDeviceSize();
@@ skipping 262 matching lines @@
         canvas->drawRect(skRect, paint);
     }
 }
 
 const char* HeadsUpDisplayLayerImpl::layerTypeAsString() const
 {
     return "HeadsUpDisplayLayer";
 }
 
 }  // namespace cc