Disabling RenderFrameHostImplBrowserTest.IsFocused_AtLoad due to flaky failures

content/browser/frame_host/render_frame_host_impl_browsertest.cc

 // Copyright 2015 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/browser/frame_host/render_frame_host_impl.h"
 #include "content/public/browser/render_frame_host.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/content_client.h"
 #include "content/public/test/content_browser_test.h"
 #include "content/public/test/content_browser_test_utils.h"
@@ skipping 47 matching lines @@
 IN_PROC_BROWSER_TEST_F(RenderFrameHostImplBrowserTest, IsFocused_AtLoad) {
   EXPECT_TRUE(
       NavigateToURL(shell(), GetTestUrl("render_frame_host", "focus.html")));
 
   // The main frame should be focused.
   WebContents* web_contents = shell()->web_contents();
   EXPECT_TRUE(ToRFHI(web_contents->GetMainFrame())->IsFocused());
 }
 
 // Test that if the content changes the focused frame, it is correctly exposed.
-IN_PROC_BROWSER_TEST_F(RenderFrameHostImplBrowserTest, IsFocused_Change) {
+// Disabled to to flaky failures: crbug.com/452631
+IN_PROC_BROWSER_TEST_F(RenderFrameHostImplBrowserTest,
+                       DISABLED_IsFocused_Change) {
   EXPECT_TRUE(
       NavigateToURL(shell(), GetTestUrl("render_frame_host", "focus.html")));
 
   WebContents* web_contents = shell()->web_contents();
 
   std::string frames[2] = { "frame1", "frame2" };
   for (const std::string& frame : frames) {
     ExecuteScriptAndGetValue(
         web_contents->GetMainFrame(), "focus" + frame + "()");
 
@@ skipping 59 matching lines @@
             web_contents->GetMainFrame()->GetVisibilityState());
 
   new_client.EnableVisibilityOverride(blink::WebPageVisibilityStatePrerender);
   EXPECT_EQ(blink::WebPageVisibilityStatePrerender,
             web_contents->GetMainFrame()->GetVisibilityState());
 
   SetBrowserClientForTesting(old_client);
 }
 
 }  // namespace content