Disable all the tests that are flaking more than 5% on Linux builders.

chrome/browser/extensions/api/app_window/app_window_apitest.cc

 // Copyright (c) 2012 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 "apps/app_window.h"
 #include "apps/app_window_registry.h"
 #include "apps/ui/native_app_window.h"
 #include "base/run_loop.h"
 #include "base/strings/string_number_conversions.h"
 #include "chrome/browser/apps/app_browsertest_util.h"
@@ skipping 30 matching lines @@
   int icon_updates_;
 
   DISALLOW_COPY_AND_ASSIGN(TestAppWindowRegistryObserver);
 };
 
 }  // namespace
 
 namespace extensions {
 
 // Tests chrome.app.window.setIcon.
-IN_PROC_BROWSER_TEST_F(ExperimentalPlatformAppBrowserTest, WindowsApiSetIcon) {
+#if defined(OS_WIN) || defined(OS_LINUX)
+// http://crbug.com/396466
+#define MAYBE_WindowsApiSetIcon DISABLED_WindowsApiSetIcon
+#else
+#define MAYBE_WindowsApiSetIcon WindowsApiSetIcon
+#endif
+IN_PROC_BROWSER_TEST_F(ExperimentalPlatformAppBrowserTest,
+                       MAYBE_WindowsApiSetIcon) {
   scoped_ptr<TestAppWindowRegistryObserver> test_observer(
       new TestAppWindowRegistryObserver(browser()->profile()));
   LoadAndLaunchPlatformApp("windows_api_set_icon", "IconSet");
   EXPECT_EQ(0, test_observer->icon_updates());
   // Now wait until the WebContent has decoded the icon and chrome has
   // processed it. This needs to be in a loop since the renderer runs in a
   // different process.
   while (test_observer->icon_updates() < 1) {
     base::RunLoop run_loop;
     run_loop.RunUntilIdle();
@@ skipping 37 matching lines @@
   EXPECT_TRUE(RunPlatformAppTest(
       "platform_apps/windows_api_always_on_top/no_permissions")) << message_;
 }
 
 IN_PROC_BROWSER_TEST_F(PlatformAppBrowserTest, WindowsApiGet) {
   EXPECT_TRUE(RunPlatformAppTest("platform_apps/windows_api_get"))
       << message_;
 }
 
 }  // namespace extensions