Disable all the browser_tests that are flaking more than 5% of the time on trybots.

chrome/browser/chromeos/login/users/avatar/user_image_manager_browsertest.cc

 // Copyright 2014 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 <map>
 #include <string>
 #include <vector>
 
 #include "base/basictypes.h"
 #include "base/compiler_specific.h"
@@ skipping 653 matching lines @@
 };
 
 IN_PROC_BROWSER_TEST_F(UserImageManagerPolicyTest, PRE_SetAndClear) {
   RegisterUser(kTestUser1);
   chromeos::StartupUtils::MarkOobeCompleted();
 }
 
 // Verifies that the user image can be set through policy. Also verifies that
 // after the policy has been cleared, the user is able to choose a different
 // image.
-IN_PROC_BROWSER_TEST_F(UserImageManagerPolicyTest, SetAndClear) {
+// http://crbug.com/396352
+IN_PROC_BROWSER_TEST_F(UserImageManagerPolicyTest, DISABLED_SetAndClear) {
   const User* user = UserManager::Get()->FindUser(kTestUser1);
   ASSERT_TRUE(user);
 
   LoginUser(kTestUser1);
   base::RunLoop().RunUntilIdle();
 
   policy::CloudPolicyStore* store = GetStoreForUser(user);
   ASSERT_TRUE(store);
 
   // Set policy. Verify that the policy-provided user image is downloaded, set
@@ skipping 187 matching lines @@
 
   saved_image = test::ImageLoader(GetUserImagePath(kTestUser1, "jpg")).Load();
   ASSERT_TRUE(saved_image);
 
   // Check image dimensions. Images can't be compared since JPEG is lossy.
   EXPECT_EQ(policy_image_->width(), saved_image->width());
   EXPECT_EQ(policy_image_->height(), saved_image->height());
 }
 
 }  // namespace chromeos