Add --verbose flag when input_api.verbose is set.

It could result in failed tests so I'll revert if it ever becomes problematic.
It ran fine with my limited testing.

R=dpranke@chromium.org
BUG=
TEST=

Review URL: http://codereview.chromium.org/6813114

git-svn-id: svn://svn.chromium.org/chrome/trunk/tools/depot_tools@81279 0039d316-1c4b-4281-b951-d872f2087c98

presubmit_canned_checks.py

@@ -456,6 +456,7 @@ def RunUnitTests(input_api, output_api, unit_tests):
     cmd.append(unit_test)
     if input_api.verbose:
       print('Running %s' % unit_test)
+      cmd.append('--verbose')
     try:
       if input_api.verbose:
         input_api.subprocess.check_call(cmd, cwd=input_api.PresubmitLocalPath())

tests/presubmit_unittest.py

@@ -2015,8 +2015,8 @@ mac|success|blew
     input_api.PresubmitLocalPath().AndReturn(self.fake_root_dir)
     input_api.PresubmitLocalPath().AndReturn(self.fake_root_dir)
     input_api.subprocess.check_call(
-        ['allo'], cwd=self.fake_root_dir)
-    cmd = ['bar.py']
+        ['allo', '--verbose'], cwd=self.fake_root_dir)
+    cmd = ['bar.py', '--verbose']
     if input_api.platform == 'win32':
       cmd.insert(0, input_api.python_executable)
     input_api.subprocess.check_call(
@@ -2044,7 +2044,7 @@ mac|success|blew
     input_api.os_listdir(path).AndReturn(['.', '..', 'a', 'b', 'c'])
     input_api.os_path.isfile = lambda x: not x.endswith('.')
     input_api.subprocess.check_call(
-        [presubmit.os.path.join('random_directory', 'b')],
+        [presubmit.os.path.join('random_directory', 'b'), '--verbose'],
         cwd=self.fake_root_dir)
 
     self.mox.ReplayAll()