cc: Re-enable disabled tile manager unittests (plus fixes)

cc/test/fake_layer_tree_host_impl.h

 // Copyright 2012 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.
 
 #ifndef CC_TEST_FAKE_LAYER_TREE_HOST_IMPL_H_
 #define CC_TEST_FAKE_LAYER_TREE_HOST_IMPL_H_
 
 #include "cc/test/fake_layer_tree_host_impl_client.h"
 #include "cc/test/fake_rendering_stats_instrumentation.h"
 #include "cc/trees/layer_tree_host_impl.h"
 #include "cc/trees/single_thread_proxy.h"
 
+namespace gpu {
+class GpuMemoryBufferManager;
+}
+
 namespace cc {
 
 class FakeLayerTreeHostImpl : public LayerTreeHostImpl {
  public:
   FakeLayerTreeHostImpl(Proxy* proxy,
                         SharedBitmapManager* manager,
                         TaskGraphRunner* task_graph_runner);
   FakeLayerTreeHostImpl(const LayerTreeSettings& settings,
                         Proxy* proxy,
                         SharedBitmapManager* manager,
                         TaskGraphRunner* task_graph_runner);
+  FakeLayerTreeHostImpl(const LayerTreeSettings& settings,
+                        Proxy* proxy,
+                        SharedBitmapManager* manager,
+                        TaskGraphRunner* task_graph_runner,
+                        gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager);
   ~FakeLayerTreeHostImpl() override;
 
   void ForcePrepareToDraw() {
     LayerTreeHostImpl::FrameData frame_data;
     PrepareToDraw(&frame_data);
     DidDrawAllLayers(frame_data);
   }
 
   void CreatePendingTree() override;
 
   BeginFrameArgs CurrentBeginFrameArgs() const override;
   void AdvanceToNextFrame(base::TimeDelta advance_by);
   void UpdateNumChildrenAndDrawPropertiesForActiveTree();
   static void UpdateNumChildrenAndDrawProperties(LayerTreeImpl* layerTree);
   static int RecursiveUpdateNumChildren(LayerImpl* layer);
 
   using LayerTreeHostImpl::ActivateSyncTree;
   using LayerTreeHostImpl::prepare_tiles_needed;
   using LayerTreeHostImpl::is_likely_to_require_a_draw;
   using LayerTreeHostImpl::RemoveRenderPasses;
 
  private:
   FakeLayerTreeHostImplClient client_;
   FakeRenderingStatsInstrumentation stats_instrumentation_;
 };
 
 }  // namespace cc
 
 #endif  // CC_TEST_FAKE_LAYER_TREE_HOST_IMPL_H_