[ChromeDriver] Fix embed mobilde devices script for new Blink roll

chrome/test/chromedriver/embed_mobile_devices_in_cpp.py

Index: chrome/test/chromedriver/embed_mobile_devices_in_cpp.py
diff --git a/chrome/test/chromedriver/embed_mobile_devices_in_cpp.py b/chrome/test/chromedriver/embed_mobile_devices_in_cpp.py
index 766edce11be28bfffb5733a0bc5b1b06eb377433..8e741696bf0e1d7c0bde1213619b6e27b59737b5 100755
--- a/chrome/test/chromedriver/embed_mobile_devices_in_cpp.py
+++ b/chrome/test/chromedriver/embed_mobile_devices_in_cpp.py
@@ -30,7 +30,8 @@ def main():
   with open(file_name, 'r') as f:
     for line in f:
       if not inside_list:
-        if 'DeviceTab._phones = [' in line or 'DeviceTab._tablets = [' in line:
+        if 'WebInspector.OverridesSupport._phones = [' in line or \
+           'WebInspector.OverridesSupport._tablets = [' in line:
           inside_list = True
       else:
         if line.strip() == '];':