Switch the remaining third_party gsutil references to gsutil.py

BUG=
R=pgervais@chromium.org

Review URL: https://codereview.chromium.org/809203003

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@293481 0039d316-1c4b-4281-b951-d872f2087c98

gclient_scm.py

@@ -27,8 +27,7 @@ import subprocess2
 THIS_FILE_PATH = os.path.abspath(__file__)
 
 GSUTIL_DEFAULT_PATH = os.path.join(
-    os.path.dirname(os.path.abspath(__file__)),
-    'third_party', 'gsutil', 'gsutil')
+    os.path.dirname(os.path.abspath(__file__)), 'gsutil.py')
 
 CHROMIUM_SRC_URL = 'https://chromium.googlesource.com/chromium/src.git'
 class DiffFiltererWrapper(object):

git_cache.py

@@ -142,8 +142,7 @@ class Mirror(object):
 
   git_exe = 'git.bat' if sys.platform.startswith('win') else 'git'
   gsutil_exe = os.path.join(
-    os.path.dirname(os.path.abspath(__file__)),
-    'third_party', 'gsutil', 'gsutil')
+    os.path.dirname(os.path.abspath(__file__)), 'gsutil.py')
   cachepath_lock = threading.Lock()
 
   def __init__(self, url, refs=None, print_func=None):