Modify WaitableEvent::Wait() to return void

chrome/browser/net/cookie_policy_browsertest.cc

 // Copyright (c) 2011 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/bind.h"
 #include "base/task.h"
 #include "base/synchronization/waitable_event.h"
 #include "chrome/browser/content_settings/host_content_settings_map.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/ui/browser.h"
@@ skipping 50 matching lines @@
   std::string GetCookies(const GURL& url) {
     std::string cookies;
     base::WaitableEvent event(true /* manual reset */,
                               false /* not initially signaled */);
     net::URLRequestContextGetter* context_getter =
         browser()->profile()->GetRequestContext();
     EXPECT_TRUE(
         BrowserThread::PostTask(
             BrowserThread::IO, FROM_HERE,
             new GetCookiesTask(url, context_getter, &event, &cookies)));
-    EXPECT_TRUE(event.Wait());
+    event.Wait();
     return cookies;
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(CookiePolicyBrowserTest);
 };
 
 // Visits a page that sets a first-party cookie.
 IN_PROC_BROWSER_TEST_F(CookiePolicyBrowserTest, AllowFirstPartyCookies) {
   ASSERT_TRUE(test_server()->Start());
@@ skipping 39 matching lines @@
   host_resolver()->AddRule("www.example.com", "127.0.0.1");
 
   ui_test_utils::NavigateToURL(browser(),
                                GURL(url.spec() + redirected_url.spec()));
 
   cookie = GetCookies(redirected_url);
   EXPECT_EQ("cookie2", cookie);
 }
 
 }  // namespace