[android_webview] Fix shell launch script.

Missed this when renaming the activity.

BUG=None
NOTRY=True
R=benm@chromium.org


Review URL: https://chromiumcodereview.appspot.com/13543003

git-svn-id: http://src.chromium.org/svn/trunk/src/build@192348 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

android/adb_run_android_webview_shell

@@ -10,6 +10,6 @@ fi
 
 adb shell am start \
   -a android.intent.action.VIEW \
-  -n org.chromium.android_webview.shell/.AndroidWebViewTestShellActivity \
+  -n org.chromium.android_webview.shell/.AwShellActivity \
   $INTENT_ARGS