Move the number conversions from string_util to a new file....

chrome/test/in_process_browser_test.cc

Index: chrome/test/in_process_browser_test.cc
===================================================================
--- chrome/test/in_process_browser_test.cc	(revision 54340)
+++ chrome/test/in_process_browser_test.cc	(working copy)
@@ -9,6 +9,7 @@
 #include "base/file_util.h"
 #include "base/path_service.h"
 #include "base/scoped_nsautorelease_pool.h"
+#include "base/string_number_conversions.h"
 #include "base/test/test_file_util.h"
 #include "chrome/browser/browser.h"
 #include "chrome/browser/browser_list.h"
@@ -330,7 +331,7 @@
 
 void InProcessBrowserTest::TimedOut() {
   std::string error_message = "Test timed out. Each test runs for a max of ";
-  error_message += IntToString(kInitialTimeoutInMS);
+  error_message += base::IntToString(kInitialTimeoutInMS);
   error_message += " ms (kInitialTimeoutInMS).";
 
   GTEST_NONFATAL_FAILURE_(error_message.c_str());