Add platform/bindings/ to WATCHLIST of blink-reviews-bindings@

WATCHLISTS

 # Copyright (c) 2012 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # Watchlist Rules
 # Refer: http://dev.chromium.org/developers/contributing-code/watchlists
 
 # IMPORTANT: The regular expression filepath is tested against each path using
 # re.search, so it is not usually necessary to add .*.
 
@@ skipping 1242 matching lines @@
     'blink_battery_status': {
       'filepath': 'third_party/WebKit/Source/modules/battery/' \
                   '|third_party/WebKit/LayoutTests/battery-status/' \
                   '|third_party/WebKit/Source/core/frame/PlatformEvent(Controller|Dispatcher)'
     },
     'blink_bidi': {
       'filepath': 'third_party/WebKit/Source/platform/text/.*Bidi' \
                   '|third_party/WebKit/Source/core/rendering/.*Bidi',
     },
     'blink_bindings': {
+      'filepath': 'third_party/WebKit/Source/platform/bindings',
       'filepath': 'third_party/WebKit/Source/bindings',
     },
     'blink_bindings_serialization': {
       'filepath': 'third_party/WebKit/Source/bindings/(core|modules)/v8/.*[Ss]erializ',
     },
     'blink_bluetooth': {
       'filepath': 'third_party/WebKit/.*[Bb]luetooth'
     },
     'blink_canvas2d': {
       'filepath': 'third_party/WebKit/Source/core/html/canvas' \
@@ skipping 1020 matching lines @@
                          'msramek+watch@chromium.org',
                          'raymes+watch@chromium.org'],
     'windows_sandboxing': ['pennymac+watch@chromium.org',
                            'wfh+watch@chromium.org'],
     'x11': ['derat+watch@chromium.org',
             'sadrul@chromium.org',
             'yusukes+watch@chromium.org'],
     'zoom': ['wjmaclean@chromium.org'],
   },
 }