Supporting command line argument to force field trials

chrome_frame/chrome_frame_automation.cc

Index: chrome_frame/chrome_frame_automation.cc
diff --git a/chrome_frame/chrome_frame_automation.cc b/chrome_frame/chrome_frame_automation.cc
index b4d302300e173ac3eac986f366b014c1a89ed6b6..9b0a08357b3159b4969dbe9059286565d4cdb7ad 100644
--- a/chrome_frame/chrome_frame_automation.cc
+++ b/chrome_frame/chrome_frame_automation.cc
@@ -1034,8 +1034,9 @@ void ChromeFrameAutomationClient::InitializeFieldTrials() {
   if (!trial) {
     // Do one-time initialization of the field trial here.
     // TODO(robertshield): End the field trial before March 7th 2013.
-    scoped_refptr<base::FieldTrial> new_trial = new base::FieldTrial(
-        "ChromeShutdownDelay", 1000, kWithDelayFieldTrialName, 2013, 3, 7);
+    scoped_refptr<base::FieldTrial> new_trial =
+        base::FieldTrial::CreateInstance("ChromeShutdownDelay", 1000,
+                                         kWithDelayFieldTrialName, 2013, 3, 7);
 
     // Be consistent for this client. Note that this will only have an effect
     // once the client id is persisted. See http://crbug.com/117188