Disabling RenderFrameHostImplBrowserTest.IsFocused_AtLoad due to flaky failures

content/browser/frame_host/render_frame_host_impl_browsertest.cc

Index: content/browser/frame_host/render_frame_host_impl_browsertest.cc
diff --git a/content/browser/frame_host/render_frame_host_impl_browsertest.cc b/content/browser/frame_host/render_frame_host_impl_browsertest.cc
index ed125866157b3e2efda37429a3cd276b4d510c4d..f80f7eea4bfb06bcd122f03d81362d1699919a09 100644
--- a/content/browser/frame_host/render_frame_host_impl_browsertest.cc
+++ b/content/browser/frame_host/render_frame_host_impl_browsertest.cc
@@ -65,7 +65,9 @@ IN_PROC_BROWSER_TEST_F(RenderFrameHostImplBrowserTest, IsFocused_AtLoad) {
 }
 
 // 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")));