cc: Use CheckedNumeric for resource size calculations.

cc/resources/scoped_resource_unittest.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/resources/scoped_resource.h"
 
 #include "cc/output/renderer.h"
 #include "cc/test/fake_output_surface.h"
 #include "cc/test/fake_output_surface_client.h"
 #include "cc/test/fake_resource_provider.h"
@@ skipping 14 matching lines @@
   scoped_ptr<ResourceProvider> resource_provider = FakeResourceProvider::Create(
       output_surface.get(), shared_bitmap_manager.get());
   scoped_ptr<ScopedResource> texture =
       ScopedResource::Create(resource_provider.get());
 
   // New scoped textures do not hold a texture yet.
   EXPECT_EQ(0u, texture->id());
 
   // New scoped textures do not have a size yet.
   EXPECT_EQ(gfx::Size(), texture->size());
-  EXPECT_EQ(0u, texture->bytes());
+  EXPECT_EQ(0u, Resource::UncheckedMemorySizeBytes(texture->size(),
+                                                   texture->format()));
 }
 
 TEST(ScopedResourceTest, CreateScopedResource) {
   FakeOutputSurfaceClient output_surface_client;
   scoped_ptr<OutputSurface> output_surface(FakeOutputSurface::Create3d());
   CHECK(output_surface->BindToClient(&output_surface_client));
 
   scoped_ptr<SharedBitmapManager> shared_bitmap_manager(
       new TestSharedBitmapManager());
   scoped_ptr<ResourceProvider> resource_provider = FakeResourceProvider::Create(
       output_surface.get(), shared_bitmap_manager.get());
   scoped_ptr<ScopedResource> texture =
       ScopedResource::Create(resource_provider.get());
   texture->Allocate(gfx::Size(30, 30), ResourceProvider::TEXTURE_HINT_IMMUTABLE,
                     RGBA_8888);
 
   // The texture has an allocated byte-size now.
   size_t expected_bytes = 30 * 30 * 4;
-  EXPECT_EQ(expected_bytes, texture->bytes());
+  EXPECT_EQ(expected_bytes, Resource::UncheckedMemorySizeBytes(
+                                texture->size(), texture->format()));
 
   EXPECT_LT(0u, texture->id());
   EXPECT_EQ(static_cast<unsigned>(RGBA_8888), texture->format());
   EXPECT_EQ(gfx::Size(30, 30), texture->size());
 }
 
 TEST(ScopedResourceTest, ScopedResourceIsDeleted) {
   FakeOutputSurfaceClient output_surface_client;
   scoped_ptr<OutputSurface> output_surface(FakeOutputSurface::Create3d());
   CHECK(output_surface->BindToClient(&output_surface_client));
@@ skipping 22 matching lines @@
                       ResourceProvider::TEXTURE_HINT_IMMUTABLE, RGBA_8888);
     EXPECT_LT(0u, texture->id());
     EXPECT_EQ(1u, resource_provider->num_resources());
     texture->Free();
     EXPECT_EQ(0u, resource_provider->num_resources());
   }
 }
 
 }  // namespace
 }  // namespace cc