Re-land: cc: Implement shared worker contexts.

cc/layers/texture_layer_unittest.cc

Index: cc/layers/texture_layer_unittest.cc
diff --git a/cc/layers/texture_layer_unittest.cc b/cc/layers/texture_layer_unittest.cc
index 22962a744a1bf5795251fea65f2db6d2194e96c7..8c138c35bd4cbe4c87d78da2dbb026a78a576667 100644
--- a/cc/layers/texture_layer_unittest.cc
+++ b/cc/layers/texture_layer_unittest.cc
@@ -189,6 +189,7 @@ class TextureLayerTest : public testing::Test {
   TextureLayerTest()
       : fake_client_(
             FakeLayerTreeHostClient(FakeLayerTreeHostClient::DIRECT_3D)),
+        output_surface_(FakeOutputSurface::Create3d()),
         host_impl_(&proxy_, &shared_bitmap_manager_, &task_graph_runner_),
         test_data_(&shared_bitmap_manager_) {}
 
@@ -214,6 +215,7 @@ class TextureLayerTest : public testing::Test {
   FakeLayerTreeHostClient fake_client_;
   TestSharedBitmapManager shared_bitmap_manager_;
   TestTaskGraphRunner task_graph_runner_;
+  scoped_ptr<OutputSurface> output_surface_;
   FakeLayerTreeHostImpl host_impl_;
   CommonMailboxObjects test_data_;
   LayerSettings layer_settings_;
@@ -833,7 +835,7 @@ class TextureLayerImplWithMailboxTest : public TextureLayerTest {
     TextureLayerTest::SetUp();
     layer_tree_host_ =
         MockLayerTreeHost::Create(&fake_client_, &task_graph_runner_);
-    EXPECT_TRUE(host_impl_.InitializeRenderer(FakeOutputSurface::Create3d()));
+    EXPECT_TRUE(host_impl_.InitializeRenderer(output_surface_.get()));
   }
 
   bool WillDraw(TextureLayerImpl* layer, DrawMode mode) {