Move the V8 benchmarking_extension.cc/.h files out of webkit/extensions into chrome as the functionality
exposed by this extension is chrome specific. The IPCs used by this extension have all been moved to chrome
to a new header file benchmarking_messages.h in chrome\common.

Added a new message filter object in chrome\browser which filters the benchmarking IPCs.

Most of the changes in this CL are centered around ensuring that the benchmarking stuff gets initialized
in the same order as before.

Continuing changes to get rid of the pattern of IPC messags spanning across content and chrome.

BUG=87335
Review URL: http://codereview.chromium.org/7885013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@101214 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/chrome/chrome_browser.gypi b/chrome/chrome_browser.gypi
index 1a2a1c5..52be050 100644
--- a/chrome/chrome_browser.gypi
+++ b/chrome/chrome_browser.gypi
@@ -328,6 +328,8 @@
         'browser/certificate_viewer.h',
         'browser/character_encoding.cc',
         'browser/character_encoding.h',
+        'browser/chrome_benchmarking_message_filter.cc',
+        'browser/chrome_benchmarking_message_filter.h',        
         'browser/chrome_browser_application_mac.h',
         'browser/chrome_browser_application_mac.mm',
         'browser/chrome_browser_main.cc',