Revert V8 update. It caused ui_test regressions on Windows and Mac.

Will investigate tomorrow.

TBR=sgjesse@chromium.org
BUG=none
TEST=none
Review URL: http://codereview.chromium.org/343020

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@30350 0039d316-1c4b-4281-b951-d872f2087c98

DEPS

@@ -40,7 +40,7 @@ deps = {
     "http://gyp.googlecode.com/svn/trunk@724",
 
   "src/v8":
-    "http://v8.googlecode.com/svn/trunk@3167",
+    "http://v8.googlecode.com/svn/trunk@3121",
 
   "src/native_client":
     "http://nativeclient.googlecode.com/svn/trunk/src/native_client@894",

webkit/data/layout_tests/platform/chromium-mac/LayoutTests/fast/dom/xmlhttprequest-constructor-in-detached-document-expected.txt

-CONSOLE MESSAGE: line 404: Uncaught TypeError: undefined is not a function
+CONSOLE MESSAGE: line 401: Uncaught TypeError: undefined is not a function
 Text for bug 25290: Crash when constructing XMLHttpRequest in a detached document.
 
 PASS

webkit/data/layout_tests/platform/chromium-win/LayoutTests/fast/dom/xmlhttprequest-constructor-in-detached-document-expected.txt

-CONSOLE MESSAGE: line 404: Uncaught TypeError: undefined is not a function
+CONSOLE MESSAGE: line 401: Uncaught TypeError: undefined is not a function
 Text for bug 25290: Crash when constructing XMLHttpRequest in a detached document.
 
 PASS