Disable Shim_TestEventName as it is super flaky on Chrome OS.

chrome/browser/apps/web_view_browsertest.cc

 // Copyright 2013 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 "base/path_service.h"
 #include "base/strings/stringprintf.h"
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/browser/apps/app_browsertest_util.h"
 #include "chrome/browser/chrome_content_browser_client.h"
 #include "chrome/browser/extensions/extension_test_message_listener.h"
@@ skipping 982 matching lines @@
                        Shim_TestInlineScriptFromAccessibleResources) {
   TestHelper("testInlineScriptFromAccessibleResources",
              "web_view/shim",
              NO_TEST_SERVER);
 }
 
 IN_PROC_BROWSER_TEST_F(WebViewTest, Shim_TestInvalidChromeExtensionURL) {
   TestHelper("testInvalidChromeExtensionURL", "web_view/shim", NO_TEST_SERVER);
 }
 
-IN_PROC_BROWSER_TEST_F(WebViewTest, Shim_TestEventName) {
+// Disable on Chrome OS, as it is flaking a lot. See: http://crbug.com/413618.
+#if defined(OS_CHROMEOS)
+#define MAYBE_Shim_TestEventName DISABLED_Shim_TestEventName
+#else
+#define MAYBE_Shim_TestEventName Shim_TestEventName
+#endif
+IN_PROC_BROWSER_TEST_F(WebViewTest, MAYBE_Shim_TestEventName) {
   TestHelper("testEventName", "web_view/shim", NO_TEST_SERVER);
 }
 
 // WebViewTest.Shim_TestOnEventProperty is flaky, so disable it.
 // http://crbug.com/359832.
 IN_PROC_BROWSER_TEST_F(WebViewTest, DISABLED_Shim_TestOnEventProperty) {
   TestHelper("testOnEventProperties", "web_view/shim", NO_TEST_SERVER);
 }
 
 IN_PROC_BROWSER_TEST_F(WebViewTest, Shim_TestLoadProgressEvent) {
@@ skipping 1320 matching lines @@
 // http://crbug.com/403325
 #define MAYBE_WebViewInBackgroundPage \
     DISABLED_WebViewInBackgroundPage
 #else
 #define MAYBE_WebViewInBackgroundPage WebViewInBackgroundPage
 #endif
 IN_PROC_BROWSER_TEST_F(WebViewTest, MAYBE_WebViewInBackgroundPage) {
   ASSERT_TRUE(RunExtensionTest("platform_apps/web_view/background"))
       << message_;
 }