Disable ChromeContentRendererClientBrowserTest.RewriteYouTubeFlashEmbed.

This is the sister test to ChromeContentRendererClientBrowserTest.RewriteYouTubeFlashEmbedObject. Both of them are incompatible with preloading HSTS for youtube.com as written.

Bug: 771338
Change-Id: I6d3357cbbd3ae978721e0e7c7cafd9410c274db9
Reviewed-on: https://chromium-review.googlesource.com/722448
Reviewed-by: Lucas Garron <lgarron@chromium.org>
Reviewed-by: Nico Weber <thakis@chromium.org>
Commit-Queue: Lucas Garron <lgarron@chromium.org>
Cr-Commit-Position: refs/heads/master@{#509734}

chrome/renderer/chrome_content_renderer_client_browsertest.cc

@@ -188,8 +188,10 @@ class ChromeContentRendererClientBrowserTest :
   scoped_refptr<content::MessageLoopRunner> message_runner_;
 };
 
+// TODO(crbug.com/771338): This test needs to be rewritten to work with
+// preloaded HSTS for youtube.com
 IN_PROC_BROWSER_TEST_P(ChromeContentRendererClientBrowserTest,
-                       RewriteYouTubeFlashEmbed) {
+                       DISABLED_RewriteYouTubeFlashEmbed) {
   GURL url(embedded_test_server()->GetURL("/flash_embeds.html"));
   ui_test_utils::NavigateToURL(browser(), url);
   content::WebContents* web_contents =