[cc] Route LayerImpl::layerTreeHostImpl() calls through LayerTreeImpl

cc/layer_tree_debug_state.h

Index: cc/layer_tree_debug_state.h
diff --git a/cc/layer_tree_debug_state.h b/cc/layer_tree_debug_state.h
new file mode 100644
index 0000000000000000000000000000000000000000..d920f231cbce0aac7e79bdc739f981d7ab1cbc44
--- /dev/null
+++ b/cc/layer_tree_debug_state.h
@@ -0,0 +1,39 @@
+// 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.
+
+#ifndef CC_LAYER_TREE_DEBUG_STATE_H_
+#define CC_LAYER_TREE_DEBUG_STATE_H_
+
+#include "cc/cc_export.h"
+
+namespace cc {
+
+class CC_EXPORT LayerTreeDebugState {
+ public:
+  LayerTreeDebugState();
+  ~LayerTreeDebugState();
+
+  bool showFPSCounter;
+  bool showPlatformLayerTree;
+  bool showDebugBorders;
+
+  bool showPaintRects;
+  bool showPropertyChangedRects;
+  bool showSurfaceDamageRects;
+  bool showScreenSpaceRects;
+  bool showReplicaScreenSpaceRects;
+  bool showOccludingRects;
+  bool showNonOccludingRects;
+
+  bool showHudInfo() const;
+  bool showHudRects() const;
+  bool hudNeedsFont() const;
+
+  static bool equal(const LayerTreeDebugState& a, const LayerTreeDebugState& b);
+  static LayerTreeDebugState unite(const LayerTreeDebugState& a, const LayerTreeDebugState& b);
+};
+
+}  // namespace cc
+
+#endif  // CC_LAYER_TREE_DEBUG_STATE_H_