Remove the default format from ResourcePool.

cc/test/layer_tree_pixel_resource_test.cc

Index: cc/test/layer_tree_pixel_resource_test.cc
diff --git a/cc/test/layer_tree_pixel_resource_test.cc b/cc/test/layer_tree_pixel_resource_test.cc
index e3df017489fa10d60968342c5f474d149859cb5e..75957f55995c04eb2f58d297e57beb1348118cc6 100644
--- a/cc/test/layer_tree_pixel_resource_test.cc
+++ b/cc/test/layer_tree_pixel_resource_test.cc
@@ -146,7 +146,8 @@ scoped_ptr<Rasterizer> LayerTreeHostPixelResourceTest::CreateRasterizer(
   return nullptr;
 }
 
-void LayerTreeHostPixelResourceTest::CreateResourceAndTileTaskWorkerPool(
+ResourceFormat
+LayerTreeHostPixelResourceTest::CreateResourceAndTileTaskWorkerPool(
     LayerTreeHostImpl* host_impl,
     scoped_ptr<TileTaskWorkerPool>* tile_task_worker_pool,
     scoped_ptr<ResourcePool>* resource_pool,
@@ -162,14 +163,15 @@ void LayerTreeHostPixelResourceTest::CreateResourceAndTileTaskWorkerPool(
   ResourceProvider* resource_provider = host_impl->resource_provider();
   size_t max_transfer_buffer_usage_bytes = 1024u * 1024u * 60u;
 
+  ResourceFormat resource_format = resource_provider->best_texture_format();
+
   switch (resource_pool_option_) {
     case BITMAP_TILE_TASK_WORKER_POOL:
       EXPECT_FALSE(context_provider);
       EXPECT_EQ(PIXEL_TEST_SOFTWARE, test_type_);
       *resource_pool =
           ResourcePool::Create(resource_provider,
-                               draw_texture_target_,
-                               resource_provider->best_texture_format());
+                               draw_texture_target_);
 
       *tile_task_worker_pool = BitmapTileTaskWorkerPool::Create(
           task_runner, TileTaskWorkerPool::GetTaskGraphRunner(),
@@ -180,8 +182,7 @@ void LayerTreeHostPixelResourceTest::CreateResourceAndTileTaskWorkerPool(
       EXPECT_EQ(PIXEL_TEST_GL, test_type_);
       *resource_pool =
           ResourcePool::Create(resource_provider,
-                               draw_texture_target_,
-                               resource_provider->best_texture_format());
+                               draw_texture_target_);
 
       *tile_task_worker_pool = GpuTileTaskWorkerPool::Create(
           task_runner, TileTaskWorkerPool::GetTaskGraphRunner());
@@ -191,9 +192,7 @@ void LayerTreeHostPixelResourceTest::CreateResourceAndTileTaskWorkerPool(
       EXPECT_EQ(PIXEL_TEST_GL, test_type_);
       EXPECT_TRUE(host_impl->GetRendererCapabilities().using_image);
       *resource_pool =
-          ResourcePool::Create(resource_provider,
-                               draw_texture_target_,
-                               resource_provider->best_texture_format());
+          ResourcePool::Create(resource_provider, draw_texture_target_);
 
       *tile_task_worker_pool = ZeroCopyTileTaskWorkerPool::Create(
           task_runner, TileTaskWorkerPool::GetTaskGraphRunner(),
@@ -205,31 +204,29 @@ void LayerTreeHostPixelResourceTest::CreateResourceAndTileTaskWorkerPool(
       EXPECT_TRUE(host_impl->GetRendererCapabilities().using_image);
       // We need to create a staging resource pool when using copy rasterizer.
       *staging_resource_pool =
-          ResourcePool::Create(resource_provider,
-                               staging_texture_target_,
-                               resource_provider->best_texture_format());
+          ResourcePool::Create(resource_provider, staging_texture_target_);
       *resource_pool =
-          ResourcePool::Create(resource_provider,
-                               draw_texture_target_,
-                               resource_provider->best_texture_format());
+          ResourcePool::Create(resource_provider, draw_texture_target_);
 
       *tile_task_worker_pool = OneCopyTileTaskWorkerPool::Create(
           task_runner, TileTaskWorkerPool::GetTaskGraphRunner(),
-          context_provider, resource_provider, staging_resource_pool->get());
+          context_provider, resource_provider, staging_resource_pool->get(),
+          resource_format);
       break;
     case PIXEL_BUFFER_TILE_TASK_WORKER_POOL:
       EXPECT_TRUE(context_provider);
       EXPECT_EQ(PIXEL_TEST_GL, test_type_);
+      resource_format = resource_provider->memory_efficient_texture_format();
       *resource_pool = ResourcePool::Create(
-          resource_provider,
-          draw_texture_target_,
-          resource_provider->memory_efficient_texture_format());
+          resource_provider, draw_texture_target_);
 
       *tile_task_worker_pool = PixelBufferTileTaskWorkerPool::Create(
           task_runner, TileTaskWorkerPool::GetTaskGraphRunner(),
           context_provider, resource_provider, max_transfer_buffer_usage_bytes);
       break;
   }
+
+  return resource_format;
 }
 
 void LayerTreeHostPixelResourceTest::RunPixelResourceTest(