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

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!--
 This file contains definitions of resources that will be translated for each
 locale. OS values are passed through from Python's sys.platform:
 
   win32 - Windows
   darwin - Mac
   linux2 - Linux (both Views and GTK+)
 
@@ skipping 4038 matching lines @@
       </message>
       <message name="IDS_FLAGS_ACCELERATED_COMPOSITING_DESCRIPTION" desc="Description of the 'GPU Accelerated Compositing' lab.">
         Enables 3D CSS and higher performance compositing of web pages using Graphics Processor Unit (GPU) hardware.
       </message>
       <message name="IDS_FLAGS_COMPOSITED_LAYER_BORDERS" desc="Name of the 'Composited layer borders' lab.">
         Composited render layer borders.
       </message>
       <message name="IDS_FLAGS_COMPOSITED_LAYER_BORDERS_DESCRIPTION" desc="Description of the 'Composited layer borders' lab.">
         Renders a border around composited Render Layers to help debug and study layer compositing.
       </message>
+      <message name="IDS_FLAGS_SHOW_FPS_COUNTER" desc="Name of the 'Show FPS counter lab.">

[jamesr, 2011/03/04 19:31:04]

mismatched '

+        FPS counter.
+      </message>
+      <message name="IDS_FLAGS_SHOW_FPS_COUNTER_DESCRIPTION" desc="Description of the 'Show FPS counter' lab.">
+        Shows a page's actual frame rate, in frames per second, when hardware acceleration is active.
+      </message>
       <message name="IDS_FLAGS_COMPOSITE_TO_TEXTURE_NAME" desc="Name of the 'Offscreen Compositing' lab.">
         Composite to Texture
       </message>
       <message name="IDS_FLAGS_COMPOSITE_TO_TEXTURE_DESCRIPTION" desc="Description of the 'Offscreen Compositing' lab.">
         Enables compositing to offscreen texture instead of directly to display.
       </message>
       <message name="IDS_FLAGS_ACCELERATED_CANVAS_2D_NAME" desc="Name of the 'GPU Accelerated Canvas 2D' lab.">
         GPU Accelerated Canvas 2D
       </message>
       <message name="IDS_FLAGS_ACCELERATED_CANVAS_2D_DESCRIPTION" desc="Description of the 'GPU Accelerated Canvas 2D' lab.">
@@ skipping 7450 matching lines @@
     </includes>
     <structures fallback_to_english="true">
       <structure name="IDD_CHROME_FRAME_FIND_DIALOG" file="cf_resources.rc" type="dialog" >
       </structure>
       <structure name="IDD_CHROME_FRAME_READY_PROMPT" file="cf_resources.rc" type="dialog" >
       </structure>
     </structures>
 
   </release>
 </grit>