cc: Don't DCHECK for layers with non-invertible transforms.

cc/trees/layer_tree_host_unittest.cc

 // Copyright 2011 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/trees/layer_tree_host.h"
 
 #include <algorithm>
 
 #include "base/synchronization/lock.h"
 #include "cc/animation/timing_function.h"
@@ skipping 2167 matching lines @@
 
   virtual void AfterTest() OVERRIDE {
   }
 
  private:
   base::TimeTicks frame_time_;
 };
 
 MULTI_THREAD_TEST_F(LayerTreeHostTestVSyncNotification);
 
+class LayerTreeHostTestUninvertibleTransformDoesNotBlockActivation
+    : public LayerTreeHostTest {
+ protected:
+  virtual void InitializeSettings(LayerTreeSettings* settings) OVERRIDE {
+    settings->impl_side_painting = true;
+  }
+
+  virtual void SetupTree() OVERRIDE {
+    LayerTreeHostTest::SetupTree();
+
+    scoped_refptr<Layer> layer = PictureLayer::Create(&client_);
+    layer->SetTransform(gfx::Transform(0.0, 0.0, 0.0, 0.0, 0.0, 0.0));
+    layer->SetBounds(gfx::Size(10, 10));
+    layer_tree_host()->root_layer()->AddChild(layer);
+  }
+
+  virtual void BeginTest() OVERRIDE {
+    PostSetNeedsCommitToMainThread();
+  }
+
+  virtual void TreeActivatedOnThread(LayerTreeHostImpl* host_impl) {
+    EndTest();
+  }
+
+  virtual void AfterTest() OVERRIDE {
+  }
+
+  FakeContentLayerClient client_;
+};
+
+MULTI_THREAD_TEST_F(
+    LayerTreeHostTestUninvertibleTransformDoesNotBlockActivation);
+
 }  // namespace
 }  // namespace cc