[omnibox] Disable flake OmniboxViewTest RendererInitiatedFocusSelectsAllWhenStartingBlurred.

Test was added on 10/12/20 with crrev.com/c/2464202.

Bug: 1138113, 45260
Change-Id: I7621a5316a4bc14be55f63cd9716c12ffb772aaa
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2485844Reviewed-by: Tommy Li <tommycli@chromium.org>
Commit-Queue: manuk hovanesian <manukh@chromium.org>
Cr-Commit-Position: refs/heads/master@{#818598}

chrome/browser/ui/omnibox/omnibox_view_browsertest.cc

@@ -738,8 +738,9 @@ IN_PROC_BROWSER_TEST_F(OmniboxViewTest,
 }
 
 // Verifies that https://crbug.com/45260 doesn't regress.
-IN_PROC_BROWSER_TEST_F(OmniboxViewTest,
-                       RendererInitiatedFocusSelectsAllWhenStartingBlurred) {
+IN_PROC_BROWSER_TEST_F(
+    OmniboxViewTest,
+    DISABLED_RendererInitiatedFocusSelectsAllWhenStartingBlurred) {
   ASSERT_NO_FATAL_FAILURE(NavigateExpectUrl(GURL("about:blank")));
 
   OmniboxView* omnibox_view = nullptr;