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. -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
       source_lang_id="en" enc_check="möl">
   <outputs>
     <output filename="grit/generated_resources.h" type="rc_header">
       <emit emit_type='prepend'></emit>
@@ skipping 4002 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.">
+        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_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.">
         Enables higher performance of canvas tags with a 2D context by rendering using Graphics Processor Unit (GPU) hardware.
       </message>
       <message name="IDS_FLAGS_WEBAUDIO_NAME" desc="Name of the 'Web Audio' lab.">
         Web Audio
       </message>
       <message name="IDS_FLAGS_WEBAUDIO_DESCRIPTION" desc="Description of the 'Web Audio' lab.">
@@ skipping 7365 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>