Disable DomSerializerTests.SerializeHTMLDOMWithDocType

BUG=488495

R=brucedawson
TBR=jam

Review URL: https://codereview.chromium.org/1147533005

Cr-Commit-Position: refs/heads/master@{#330429}

content/renderer/dom_serializer_browsertest.cc

@@ -779,7 +779,15 @@ class DomSerializerTests : public ContentBrowserTest,
 
 // If original contents have document type, the serialized contents also have
 // document type.
-IN_PROC_BROWSER_TEST_F(DomSerializerTests, SerializeHTMLDOMWithDocType) {
+// Disabled by ellyjones@ on 2015-05-18, see https://crbug.com/488495.
+#if defined(OS_MACOSX)
+#define MAYBE_SerializeHTMLDOMWithDocType DISABLED_SerializeHTMLDOMWithDocType
+#else
+#define MAYBE_SerializeHTMLDOMWithDocType SerializeHTMLDOMWithDocType
+#endif
+
+IN_PROC_BROWSER_TEST_F(DomSerializerTests,
+                       MAYBE_SerializeHTMLDOMWithDocType) {
   base::FilePath page_file_path =
       GetTestFilePath("dom_serializer", "youtube_1.htm");
   GURL file_url = net::FilePathToFileURL(page_file_path);