cc: Add command line flags for the various show rect debugging features.

cc/layer_tree_host.cc

Index: cc/layer_tree_host.cc
diff --git a/cc/layer_tree_host.cc b/cc/layer_tree_host.cc
index a186ed0ca2c7dde89d5f7ec52f7d83da1764d6b4..8921ef4ee71ee22d3957469f6a7b195998b9bb0e 100644
--- a/cc/layer_tree_host.cc
+++ b/cc/layer_tree_host.cc
@@ -4,6 +4,7 @@
 
 #include "cc/layer_tree_host.h"
 
+#include "base/command_line.h"
 #include "base/debug/trace_event.h"
 #include "base/message_loop.h"
 #include "cc/font_atlas.h"
@@ -21,6 +22,7 @@
 #include "cc/overdraw_metrics.h"
 #include "cc/settings.h"
 #include "cc/single_thread_proxy.h"
+#include "cc/switches.h"
 #include "cc/thread.h"
 #include "cc/thread_proxy.h"
 #include "cc/tree_synchronizer.h"
@@ -51,6 +53,12 @@ LayerTreeSettings::LayerTreeSettings()
     , maxUntiledLayerSize(gfx::Size(512, 512))
     , minimumOcclusionTrackingSize(gfx::Size(160, 160))
 {
+    // TODO(danakj): Move this to chromium when we don't go through the WebKit API anymore.
+    showPropertyChangedRects = CommandLine::ForCurrentProcess()->HasSwitch(cc::switches::kShowPropertyChangedRects);

[tfarina, 2012/11/13 15:00:19]

do we need cc:: here? We are in cc namespace already.

+    showSurfaceDamageRects = CommandLine::ForCurrentProcess()->HasSwitch(cc::switches::kShowSurfaceDamageRects);
+    showScreenSpaceRects = CommandLine::ForCurrentProcess()->HasSwitch(cc::switches::kShowScreenSpaceRects);
+    showReplicaScreenSpaceRects = CommandLine::ForCurrentProcess()->HasSwitch(cc::switches::kShowReplicaScreenSpaceRects);
+    showOccludingRects = CommandLine::ForCurrentProcess()->HasSwitch(cc::switches::kShowOccludingRects);
 }
 
 LayerTreeSettings::~LayerTreeSettings()