Fail tests fast if overriding the Windows registry fails.

components/browser_watcher/exit_code_watcher_win_unittest.cc

 // Copyright (c) 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 "components/browser_watcher/exit_code_watcher_win.h"
 
 #include <stdint.h>
 
 #include <utility>
 
@@ skipping 67 matching lines @@
  public:
   typedef testing::Test Super;
 
   static const int kExitCode = 0xCAFEBABE;
 
   ExitCodeWatcherTest() : cmd_line_(base::CommandLine::NO_PROGRAM) {}
 
   void SetUp() override {
     Super::SetUp();
 
-    override_manager_.OverrideRegistry(HKEY_CURRENT_USER);
+    ASSERT_NO_FATAL_FAILURE(
+        override_manager_.OverrideRegistry(HKEY_CURRENT_USER));
   }
 
   base::Process OpenSelfWithAccess(uint32_t access) {
     return base::Process::OpenWithAccess(base::GetCurrentProcId(), access);
   }
 
   void VerifyWroteExitCode(base::ProcessId proc_id, int exit_code) {
     base::win::RegistryValueIterator it(
           HKEY_CURRENT_USER, kRegistryPath);
 
@@ skipping 66 matching lines @@
   // Kill the sleeper, and make sure it's exited before we continue.
   ASSERT_NO_FATAL_FAILURE(sleeper.Kill(kExitCode, true));
 
   watcher.WaitForExit();
   EXPECT_EQ(kExitCode, watcher.exit_code());
 
   VerifyWroteExitCode(sleeper.process().Pid(), kExitCode);
 }
 
 }  // namespace browser_watcher