cc: Remove opaque flags from SharedQuadState and DrawQuad

cc/io_surface_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/io_surface_layer_impl.h"
 
 #include "base/stringprintf.h"
 #include "cc/gl_renderer.h" // For the GLC() macro.
 #include "cc/graphics_context.h"
 #include "cc/io_surface_draw_quad.h"
@@ skipping 60 matching lines @@
         m_ioSurfaceChanged = false;
     }
 }
 
 void IOSurfaceLayerImpl::appendQuads(QuadSink& quadSink, AppendQuadsData& appendQuadsData)
 {
     SharedQuadState* sharedQuadState = quadSink.useSharedQuadState(createSharedQuadState());
     appendDebugBorderQuad(quadSink, sharedQuadState, appendQuadsData);
 
     gfx::Rect quadRect(gfx::Point(), contentBounds());
-    quadSink.append(IOSurfaceDrawQuad::create(sharedQuadState, quadRect, m_ioSurfaceSize, m_ioSurfaceTextureId, IOSurfaceDrawQuad::Flipped).PassAs<DrawQuad>(), appendQuadsData);
+    gfx::Rect opaqueRect(contentsOpaque() ? quadRect : gfx::Rect());
+    quadSink.append(IOSurfaceDrawQuad::create(sharedQuadState, quadRect, opaqueRect, m_ioSurfaceSize, m_ioSurfaceTextureId, IOSurfaceDrawQuad::Flipped).PassAs<DrawQuad>(), appendQuadsData);
 }
 
 void IOSurfaceLayerImpl::dumpLayerProperties(std::string* str, int indent) const
 {
     str->append(indentString(indent));
     base::StringAppendF(str, "iosurface id: %u texture id: %u\n", m_ioSurfaceId, m_ioSurfaceTextureId);
     LayerImpl::dumpLayerProperties(str, indent);
 }
 
 void IOSurfaceLayerImpl::didLoseContext()
@@ skipping 12 matching lines @@
     m_ioSurfaceId = ioSurfaceId;
     m_ioSurfaceSize = size;
 }
 
 const char* IOSurfaceLayerImpl::layerTypeAsString() const
 {
     return "IOSurfaceLayer";
 }
 
 }  // namespace cc