Update isolate.gypi to support Swarming + move .isolate files

PRESUBMIT.py

 # Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import json
 import os
@@ skipping 255 matching lines @@
                   r'^google_apis[\\\/].*\.py$',
                   r'^net.*[\\\/].*\.py$',
                   r'^out.*[\\\/].*\.py$',
                   r'^testing[\\\/].*\.py$',
                   r'^third_party[\\\/].*\.py$',
                   r'^tools[\\\/]find_depot_tools.py$',
                   r'^tools[\\\/]clang[\\\/].*\.py$',
                   r'^tools[\\\/]generate_library_loader[\\\/].*\.py$',
                   r'^tools[\\\/]gn[\\\/].*\.py$',
                   r'^tools[\\\/]gyp[\\\/].*\.py$',
+                  r'^tools[\\\/]isolate_driver.py$',
                   r'^tools[\\\/]protoc_wrapper[\\\/].*\.py$',
                   r'^tools[\\\/]python[\\\/].*\.py$',
                   r'^tools[\\\/]python_charts[\\\/]data[\\\/].*\.py$',
                   r'^tools[\\\/]refactoring[\\\/].*\.py$',
                   r'^tools[\\\/]swarming_client[\\\/].*\.py$',
                   r'^tools[\\\/]vim[\\\/].*\.py$',
                   # TODO(phoglund): should arguably be checked.
                   r'^tools[\\\/]valgrind-webrtc[\\\/].*\.py$',
                   r'^tools[\\\/]valgrind[\\\/].*\.py$',
                   r'^tools[\\\/]win[\\\/].*\.py$',
@@ skipping 69 matching lines @@
     for builder in masters[master]:
       if 'presubmit' in builder:
         # Do not trigger presubmit builders, since they're likely to fail
         # (e.g. OWNERS checks before finished code review), and we're running
         # local presubmit anyway.
         pass
       else:
         try_config[master][builder] = ['defaulttests']
 
   return try_config