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

cc/test/fake_layer_tree_host_impl.h

Index: cc/test/fake_layer_tree_host_impl.h
diff --git a/cc/test/fake_layer_tree_host_impl.h b/cc/test/fake_layer_tree_host_impl.h
index e5a128c47b0550d90d5ee37bf29c644ef4cf1bf4..f47a098dd2f8b2a0fc4f66e289e1e977409559df 100644
--- a/cc/test/fake_layer_tree_host_impl.h
+++ b/cc/test/fake_layer_tree_host_impl.h
@@ -10,6 +10,10 @@
 #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 {
@@ -21,6 +25,11 @@ class FakeLayerTreeHostImpl : public LayerTreeHostImpl {
                         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() {