Add dependencies on gtest and gmock

.DEPS.git

 # DO NOT EDIT EXCEPT FOR LOCAL TESTING.
 # THIS IS A GENERATED FILE.
 # ALL MANUAL CHANGES WILL BE OVERWRITTEN.
 # SEE http://code.google.com/p/chromium/wiki/UsingGit
 # FOR HOW TO ROLL DEPS
 vars = {
     'webkit_url':
          'https://chromium.googlesource.com/chromium/blink.git',
     'git_url':
          'https://chromium.googlesource.com'
 }
 
 deps = {
     'v8/build/gyp':
         Var('git_url') + '/external/gyp.git@a3e2a5caf24a1e0a45401e09ad131210bf16b852',
     'v8/buildtools':
         Var('git_url') + '/chromium/buildtools.git@fb782d4369d5ae04f17a2fceef7de5a63e50f07b',
+    'v8/testing/gmock':
+        Var('git_url') + '/external/googlemock.git@6b1759c3816d574bddde3e1725c51a811c8870e7',
+    'v8/testing/gtest':
+        Var('git_url') + '/external/googletest.git@74de57c951aedebc5dfe26a27604353432392b98',
     'v8/third_party/icu':
         Var('git_url') + '/chromium/deps/icu52.git@26d8859357ac0bfb86b939bf21c087b8eae22494',
 }
 
 deps_os = {
     'win':
     {
         'v8/third_party/cygwin':
             Var('git_url') + '/chromium/deps/cygwin.git@06a117a90c15174436bfa20ceebbfdf43b7eb820',
         'v8/third_party/python_26':
@@ skipping 66 matching lines @@
     {
     'action':
          [
     'python',
     'v8/build/gyp_v8'
 ],
     'pattern':
          '.'
 }
 ]