cc: Remove cc::settings, move them to LayerTreeSettings.

cc/layer_tree_host.h

Index: cc/layer_tree_host.h
diff --git a/cc/layer_tree_host.h b/cc/layer_tree_host.h
index b81c7ca08452f99c9657ac2e24f5dda8e1415f7d..63401c6cf6b4a25f7f20f1593560275e217ce19b 100644
--- a/cc/layer_tree_host.h
+++ b/cc/layer_tree_host.h
@@ -63,6 +63,12 @@ struct CC_EXPORT LayerTreeSettings {
     bool showReplicaScreenSpaceRects;
     bool showOccludingRects;
     bool renderVSyncEnabled;
+    bool perTilePaintingEnabled;
+    bool partialSwapEnabled;
+    bool acceleratedAnimationEnabled;
+    bool pageScalePinchZoomEnabled;
+    bool backgroundColorInsteadOfCheckerboard;
+    bool showOverdrawInTracing;
     double refreshRate;
     size_t maxPartialTextureUpdates;
     gfx::Size defaultTileSize;