Update gtest and gmock to the latest versions

DEPS

 # Copyright 2014 The Crashpad Authors. All rights reserved.
 #
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
 # You may obtain a copy of the License at
 #
 #     http://www.apache.org/licenses/LICENSE-2.0
 #
 # Unless required by applicable law or agreed to in writing, software
 # distributed under the License is distributed on an "AS IS" BASIS,
 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
 vars = {
   'chromium_git': 'https://chromium.googlesource.com',
 }
 
 deps = {
   'crashpad/third_party/gmock/gmock':
       Var('chromium_git') + '/external/gmock@' +
-      '08c004e6a66bab9509d0797a9cb66ed2ca15e244',  # svn r463
+      '29763965ab52f24565299976b936d1265cb6a271',  # svn r501
   'crashpad/third_party/gtest/gtest':
       Var('chromium_git') + '/external/gtest@' +
-      '237d7a871eea8c1ef5227795e81ff071f15c2710',  # svn r671
+      '8245545b6dc9c4703e6496d1efd19e975ad2b038',  # svn r700
   'crashpad/third_party/gyp/gyp':
       Var('chromium_git') + '/external/gyp@' +
       '46282cedf40ff7fe803be4af357b9d59050f02e4',  # svn r1977
   'crashpad/third_party/mini_chromium/mini_chromium':
       Var('chromium_git') + '/chromium/mini_chromium@' +
       'eeb3b6a4f020dbfc34fe8bc42844796fccc60d5b',
 }
 
 hooks = [
   {
     'name': 'gyp',
     'pattern': '\.gypi?$',
     'action': ['python', 'crashpad/build/gyp_crashpad.py'],
   },
 ]