Presubmit for chrome/browser/resources matches multiline metric type.

Also added a testcase for it and a nice print of errors.

BUG=443026

Review URL: https://codereview.chromium.org/809053003

Cr-Commit-Position: refs/heads/master@{#317794}

3 files changed, 16 insertions, 5 deletions

diff --git a/PRESUBMIT_test_mocks.py b/PRESUBMIT_test_mocks.py
index 5caa156..03d9232 100644
--- a/PRESUBMIT_test_mocks.py
+++ b/PRESUBMIT_test_mocks.py
@@ -58,6 +58,9 @@ class MockOutputApi(object):
       self.items = items
       self.long_text = long_text
 
+    def __repr__(self):
+      return self.message
+
   class PresubmitError(PresubmitResult):
     def __init__(self, message, items, long_text=''):
       MockOutputApi.PresubmitResult.__init__(self, message, items, long_text)
diff --git a/chrome/browser/resources/PRESUBMIT.py b/chrome/browser/resources/PRESUBMIT.py
index 9d6dfaa..502d47a 100644
--- a/chrome/browser/resources/PRESUBMIT.py
+++ b/chrome/browser/resources/PRESUBMIT.py
@@ -79,10 +79,10 @@ def IsBoolean(new_content_lines, metric_name, input_api):
   new_content = '\n'.join(new_content_lines)
 
   html_element_re = r'<(.*?)(^|\s+)metric\s*=\s*"%s"(.*?)>' % (metric_name)
-  type_re = (r'datatype="boolean"|type="checkbox"|type="radio".*?'
-      'value=("true"|"false")')
+  type_re = (r'datatype\s*=\s*"boolean"|type\s*=\s*"checkbox"|'
+      'type\s*=\s*"radio".*?value\s*=\s*("true"|"false")')
 
-  match = input_api.re.search(html_element_re, new_content)
+  match = input_api.re.search(html_element_re, new_content, input_api.re.DOTALL)
   return (match and
       any(input_api.re.search(type_re, match.group(i)) for i in (1, 3)))
 
diff --git a/chrome/browser/resources/PRESUBMIT_test.py b/chrome/browser/resources/PRESUBMIT_test.py
index d46f3b7..923f2be 100644
--- a/chrome/browser/resources/PRESUBMIT_test.py
+++ b/chrome/browser/resources/PRESUBMIT_test.py
@@ -56,13 +56,21 @@ class HTMLActionAdditionTest(unittest.TestCase):
     lines = ['<input id="testinput" pref="testpref"',
              'metric="invalidaction" type="checkbox" dialog-pref>']
     warnings = self._testChange(lines)
-    self.assertEqual(1, len(warnings))
+    self.assertEqual(1, len(warnings), warnings)
 
   def testInValidChange_Radio(self):
     lines = ['<input id="testinput" pref="testpref"',
              '  metric="validaction" type="radio" dialog-pref value="string">']
     warnings = self._testChange(lines)
-    self.assertEqual(1, len(warnings))
+    self.assertEqual(1, len(warnings), warnings)
+
+  def testValidChange_MultilineType(self):
+    lines = ['<input id="testinput" pref="testpref"\n'
+             ' metric="validaction" type=\n'
+             ' "radio" dialog-pref value=\n'
+             ' "false">']
+    warnings = self._testChange(lines)
+    self.assertEqual([], self._testChange(lines))
 
   def _testChange(self, lines):
     mock_input_api = MockInputApi()