cc: Remove the opaque rect return-parameter from ContentLayerClient.

cc/trees/layer_tree_host_pixeltest_masks.cc

 // Copyright 2013 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 "build/build_config.h"
 #include "cc/layers/content_layer.h"
 #include "cc/layers/content_layer_client.h"
 #include "cc/layers/image_layer.h"
 #include "cc/layers/solid_color_layer.h"
 #include "cc/test/layer_tree_pixel_test.h"
@@ skipping 11 matching lines @@
   MaskContentLayerClient() {}
   virtual ~MaskContentLayerClient() {}
 
   virtual void DidChangeLayerCanUseLCDText() OVERRIDE {}
 
   virtual bool FillsBoundsCompletely() const OVERRIDE { return false; }
 
   virtual void PaintContents(
       SkCanvas* canvas,
       const gfx::Rect& rect,
-      gfx::RectF* opaque_rect,
       ContentLayerClient::GraphicsContextStatus gc_status) OVERRIDE {
     SkPaint paint;
     paint.setStyle(SkPaint::kStroke_Style);
     paint.setStrokeWidth(SkIntToScalar(2));
     paint.setColor(SK_ColorWHITE);
 
     canvas->clear(SK_ColorTRANSPARENT);
     gfx::Rect inset_rect(rect);
     while (!inset_rect.IsEmpty()) {
       inset_rect.Inset(3, 3, 2, 2);
@@ skipping 36 matching lines @@
   mask->SetIsMask(true);
   mask->SetBounds(gfx::Size(100, 100));
 
   SkBitmap bitmap;
   bitmap.allocN32Pixels(400, 400);
   SkCanvas canvas(bitmap);
   canvas.scale(SkIntToScalar(4), SkIntToScalar(4));
   MaskContentLayerClient client;
   client.PaintContents(&canvas,
                        gfx::Rect(100, 100),
-                       NULL,
                        ContentLayerClient::GRAPHICS_CONTEXT_ENABLED);
   mask->SetBitmap(bitmap);
 
   scoped_refptr<SolidColorLayer> green = CreateSolidColorLayerWithBorder(
       gfx::Rect(50, 50, 100, 100), kCSSGreen, 1, SK_ColorBLACK);
   green->SetMaskLayer(mask.get());
   background->AddChild(green);
 
   this->impl_side_painting_ = false;
   RunPixelTest(GL_WITH_BITMAP,
@@ skipping 173 matching lines @@
   RunPixelTest(GL_WITH_BITMAP,
                background,
                base::FilePath(FILE_PATH_LITERAL(
                    "mask_of_replica_of_clipped_layer.png")));
 }
 
 }  // namespace
 }  // namespace cc
 
 #endif  // OS_ANDROID