cc: Use CheckedNumeric for resource size calculations.

cc/tiles/tile_manager_unittest.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 "base/thread_task_runner_handle.h"
 #include "cc/resources/resource_pool.h"
 #include "cc/test/begin_frame_args_test.h"
 #include "cc/test/fake_impl_proxy.h"
 #include "cc/test/fake_layer_tree_host_impl.h"
 #include "cc/test/fake_output_surface.h"
@@ skipping 1389 matching lines @@
   // Verify that the queue has a required for draw tile at Top.
   scoped_ptr<RasterTilePriorityQueue> queue(host_impl_.BuildRasterQueue(
       SAME_PRIORITY_FOR_BOTH_TREES, RasterTilePriorityQueue::Type::ALL));
   EXPECT_FALSE(queue->IsEmpty());
   EXPECT_TRUE(queue->Top().tile()->required_for_draw());
   EXPECT_EQ(gfx::Size(256, 256), queue->Top().tile()->desired_texture_size());
   EXPECT_EQ(RGBA_8888, host_impl_.resource_provider()->best_texture_format());
 
   ManagedMemoryPolicy policy = host_impl_.ActualManagedMemoryPolicy();
   policy.bytes_limit_when_visible =
-      Resource::MemorySizeBytes(gfx::Size(256, 256), RGBA_8888);
+      Resource::UncheckedMemorySizeBytes(gfx::Size(256, 256), RGBA_8888);
   host_impl_.SetMemoryPolicy(policy);
 
   EXPECT_FALSE(host_impl_.is_likely_to_require_a_draw());
   host_impl_.tile_manager()->PrepareTiles(host_impl_.global_tile_state());
   EXPECT_TRUE(host_impl_.is_likely_to_require_a_draw());
 
   scoped_ptr<ScopedResource> resource =
       host_impl_.resource_pool()->AcquireResource(gfx::Size(256, 256),
                                                   RGBA_8888);
 
   host_impl_.tile_manager()->CheckIfMoreTilesNeedToBePreparedForTesting();
   EXPECT_FALSE(host_impl_.is_likely_to_require_a_draw());
 
   host_impl_.resource_pool()->ReleaseResource(resource.Pass(), 0);
 }
 
 }  // namespace
 }  // namespace cc