Correct invalid use of 'is' when '==' should have been used.

R=nsylvain@chromium.org
BUG=


Review URL: https://chromiumcodereview.appspot.com/11046016

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@159909 0039d316-1c4b-4281-b951-d872f2087c98

gclient.py

@@ -574,7 +574,7 @@ class Dependency(gclient_utils.WorkItem, DependencySettings):
         # Strip any leading path separators.
         while file_list[i].startswith(('\\', '/')):
           file_list[i] = file_list[i][1:]
-    elif command is 'recurse':
+    elif command == 'recurse':
       if not isinstance(parsed_url, self.FileImpl):
         # Skip file only checkout.
         scm = gclient_scm.GetScmName(parsed_url)
@@ -1018,7 +1018,7 @@ solutions = [
     if (sys.stdout.isatty() and not self._options.verbose):
       if command in ('update', 'revert'):
         pm = Progress('Syncing projects', 1)
-      elif command is 'recurse':
+      elif command == 'recurse':
         pm = Progress(' '.join(args), 1)
     work_queue = gclient_utils.ExecutionQueue(self._options.jobs, pm)
     for s in self.dependencies:

subprocess2.py

@@ -295,9 +295,9 @@ class Popen(subprocess.Popen):
       # This thread needs to be optimized for speed.
       while threads:
         item = queue.get()
-        if item[0] is 'stdout':
+        if item[0] == 'stdout':
           self.stdout_cb(item[1])
-        elif item[0] is 'stderr':
+        elif item[0] == 'stderr':
           self.stderr_cb(item[1])
         else:
           # A thread terminated.