Add command line switches and about:flag to enable FPS indicator and compositor layer tree.

chrome/common/chrome_switches.cc

Index: chrome/common/chrome_switches.cc
diff --git a/chrome/common/chrome_switches.cc b/chrome/common/chrome_switches.cc
index 29b7b6faaff02feed76478b1ede95fadc33abfc1..b0f299fd68b8eebeab3b149e700f8a90ed19e3af 100644
--- a/chrome/common/chrome_switches.cc
+++ b/chrome/common/chrome_switches.cc
@@ -1108,6 +1108,13 @@ const char kShowIcons[]                     = "show-icons";
 // layer compositing.
 const char kShowCompositedLayerBorders[]    = "show-composited-layer-borders";
 
+// Draws a textual dump of the compositor layer tree to help debug and study
+// layer compositing.
+const char kShowCompositedLayerTree[]    = "show-composited-layer-tree";
+
+// Draws a FPS indicator
+const char kShowFPSCounter[]    = "show-fps-counter";

[Vangelis Kokkevis, 2011/02/24 07:07:11]

For consistency, please align the '=' sign with all the others in the file.

[nduca, 2011/03/03 20:04:06]

Done.

+
 // Visibly render a border around paint rects in the web page to help debug
 // and study painting behavior.
 const char kShowPaintRects[]                = "show-paint-rects";