Add --enable-drive-api for Chrome OS

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 919b25ab249daed09fe521d5e12c1d4f014c93ce..43bc78764bdcc51d467006c366054d8706d86ee9 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -5861,6 +5861,12 @@ Keep your key file in a safe place. You will need it to create new versions of y
         <message name="IDS_FLAGS_ALLOW_TOUCHPAD_THREE_FINGER_CLICK_DESCRIPTION" desc="Description for the flag to enable touchpad three finger click as middle button.">
           Enables touchpad three-finger-click as middle button.
         </message>
+        <message name="IDS_FLAGS_ENABLE_DRIVE_V2_API" desc="Name for the flag to enable Drive V2 API.">
+          Enable Drive V2 API.
+        </message>
+        <message name="IDS_FLAGS_ENABLE_DRIVE_V2_API_DESCRIPTION" desc="Description for the flag to enable Drive V2 API.">
+          Enables to use Drive V2 API for accessing Google Drive folder.
+        </message>
         <message name="IDS_FLAGS_ENABLE_HTML5_CAMERA" desc="Name for the flag to enable new camera WebUI.">
           Enable HTML5 camera in WebUI.
         </message>