WIP cc: remove unused and legacy GetMappedMemoryLimit code.

cc/trees/layer_tree_host_unittest.cc

Index: cc/trees/layer_tree_host_unittest.cc
diff --git a/cc/trees/layer_tree_host_unittest.cc b/cc/trees/layer_tree_host_unittest.cc
index 6c3ae9e86bf5484b536468d4b271ea448d8f85a6..4cd5a9674c5c235317b243d199b20257e3d6252f 100644
--- a/cc/trees/layer_tree_host_unittest.cc
+++ b/cc/trees/layer_tree_host_unittest.cc
@@ -3601,55 +3601,6 @@ class LayerTreeHostTestUpdateLayerInEmptyViewport : public LayerTreeHostTest {
 
 MULTI_THREAD_TEST_F(LayerTreeHostTestUpdateLayerInEmptyViewport);
 
-class LayerTreeHostTestMaxTransferBufferUsageBytes : public LayerTreeHostTest {
- protected:
-  void InitializeSettings(LayerTreeSettings* settings) override {
-    // Testing async uploads.
-    settings->use_zero_copy = false;
-    settings->use_one_copy = false;
-  }
-
-  scoped_ptr<FakeOutputSurface> CreateFakeOutputSurface() override {
-    scoped_refptr<TestContextProvider> context_provider =
-        TestContextProvider::Create();
-    context_provider->SetMaxTransferBufferUsageBytes(512 * 512);
-    if (delegating_renderer())
-      return FakeOutputSurface::CreateDelegating3d(context_provider);
-    else
-      return FakeOutputSurface::Create3d(context_provider);
-  }
-
-  void SetupTree() override {
-    client_.set_fill_with_nonsolid_color(true);
-    scoped_refptr<FakePictureLayer> root_layer =
-        FakePictureLayer::Create(layer_settings(), &client_);
-    root_layer->SetBounds(gfx::Size(1024, 1024));
-    root_layer->SetIsDrawable(true);
-
-    layer_tree_host()->SetRootLayer(root_layer);
-    LayerTreeHostTest::SetupTree();
-  }
-
-  void BeginTest() override { PostSetNeedsCommitToMainThread(); }
-
-  void DidActivateTreeOnThread(LayerTreeHostImpl* impl) override {
-    TestWebGraphicsContext3D* context = TestContext();
-
-    // Expect that the transfer buffer memory used is equal to the
-    // MaxTransferBufferUsageBytes value set in CreateOutputSurface.
-    EXPECT_EQ(512 * 512u, context->max_used_transfer_buffer_usage_bytes());
-    EndTest();
-  }
-
-  void AfterTest() override {}
-
- private:
-  FakeContentLayerClient client_;
-};
-
-// Impl-side painting is a multi-threaded compositor feature.
-MULTI_THREAD_TEST_F(LayerTreeHostTestMaxTransferBufferUsageBytes);
-
 class LayerTreeHostTestSetMemoryPolicyOnLostOutputSurface
     : public LayerTreeHostTest {
  protected: