Disable all the browser_tests that are flaking more than 5% of the time on trybots.

extensions/renderer/script_context_browsertest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/public/test/render_view_test.h"
 #include "extensions/renderer/script_context.h"
 #include "third_party/WebKit/public/web/WebDocument.h"
 #include "third_party/WebKit/public/web/WebLocalFrame.h"
 #include "url/gurl.h"
 
 using blink::WebFrame;
 
 namespace extensions {
 namespace {
 
 class ScriptContextTest : public content::RenderViewTest {
  protected:
   GURL GetEffectiveDocumentURL(const WebFrame* frame) {
     return ScriptContext::GetEffectiveDocumentURL(
         frame, frame->document().url(), true);
   }
 };
 
-// ScriptContextTest.GetEffectiveDocumentURL is flaky on Windows
-// (http://crbug.com/391894)
-#if defined(OS_WIN)
-#define MAYBE_GetEffectiveDocumentURL DISABLED_GetEffectiveDocumentURL
-#else
-#define MAYBE_GetEffectiveDocumentURL GetEffectiveDocumentURL
-#endif
-
-TEST_F(ScriptContextTest, MAYBE_GetEffectiveDocumentURL) {
+// http://crbug.com/391894
+TEST_F(ScriptContextTest, DISABLED_GetEffectiveDocumentURL) {
   GURL top_url("http://example.com/");
   GURL different_url("http://example.net/");
   GURL blank_url("about:blank");
   GURL srcdoc_url("about:srcdoc");
 
   const char frame_html[] =
       "<iframe name='frame1' srcdoc=\""
       "  <iframe name='frame1_1'></iframe>"
       "  <iframe name='frame1_2' sandbox=''></iframe>"
       "\"></iframe>"
@@ skipping 49 matching lines @@
   EXPECT_EQ(GetEffectiveDocumentURL(frame2_1), blank_url);
 
   // top -> different origin = different origin
   EXPECT_EQ(GetEffectiveDocumentURL(frame3), different_url);
   // top -> different origin -> about:blank = inherit
   EXPECT_EQ(GetEffectiveDocumentURL(frame3_1), different_url);
 }
 
 }  // namespace
 }  // namespace extensions