Disable CachingAsyncHitTest_WithPinchZoom on Linux and CrOS

Bug: 1121099
Tbr: kbabbit@microsoft.com, katie@chromium.org
Change-Id: Ibb27d5f44a0e009b6b51bed344f1c7e2268ccbcb
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2371705Reviewed-by: Dominik Röttsches <drott@chromium.org>
Commit-Queue: Dominik Röttsches <drott@chromium.org>
Cr-Commit-Position: refs/heads/master@{#800960}

content/browser/accessibility/hit_testing_browsertest.cc

@@ -571,8 +571,17 @@ IN_PROC_BROWSER_TEST_P(AccessibilityHitTestingBrowserTest,
 }
 
 #if !defined(OS_ANDROID) && !defined(OS_MAC)
+// Fails flakily with compared ID differences. TODO(crbug.com/1121099): Re-nable
+// this test.
+#if defined(OS_LINUX) || defined(OS_CHROMEOS)
+#define MAYBE_CachingAsyncHitTest_WithPinchZoom \
+  DISABLED_CachingAsyncHitTest_WithPinchZoom
+#else
+#define MAYBE_CachingAsyncHitTest_WithPinchZoom \
+  CachingAsyncHitTest_WithPinchZoom
+#endif
 IN_PROC_BROWSER_TEST_P(AccessibilityHitTestingBrowserTest,
-                       CachingAsyncHitTest_WithPinchZoom) {
+                       MAYBE_CachingAsyncHitTest_WithPinchZoom) {
   ASSERT_TRUE(embedded_test_server()->Start());
 
   EXPECT_TRUE(NavigateToURL(shell(), GURL(url::kAboutBlankURL)));