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

chrome/common/chrome_switches.cc

 // Copyright (c) 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.
 
 #include "chrome/common/chrome_switches.h"
 
 #include "base/base_switches.h"
 #include "base/command_line.h"
 
 namespace switches {
@@ skipping 1123 matching lines @@
 // The LSID of the account to use for the service process.
 const char kServiceAccountLsid[]            = "service-account-lsid";
 
 // See kHideIcons.
 const char kShowIcons[]                     = "show-icons";
 
 // Renders a border around composited Render Layers to help debug and study
 // 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";
+
 // Visibly render a border around paint rects in the web page to help debug
 // and study painting behavior.
 const char kShowPaintRects[]                = "show-paint-rects";
 
 // Change the DCHECKS to dump memory and continue instead of displaying error
 // dialog. This is valid only in Release mode when --enable-dcheck is
 // specified.
 const char kSilentDumpOnDCHECK[]            = "silent-dump-on-dcheck";
 
 // Replaces the buffered data source for <audio> and <video> with a simplified
@@ skipping 303 matching lines @@
 
 // -----------------------------------------------------------------------------
 // DO NOT ADD YOUR CRAP TO THE BOTTOM OF THIS FILE.
 //
 // You were going to just dump your switches here, weren't you? Instead,
 // please put them in alphabetical order above, or in order inside the
 // appropriate ifdef at the bottom. The order should match the header.
 // -----------------------------------------------------------------------------
 
 }  // namespace switches