Don't use base::MessageLoop::{Quit,QuitClosure} in chrome/

chrome/browser/site_details_browsertest.cc

 // Copyright 2015 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 "chrome/browser/site_details.h"
 
 #include "base/bind_helpers.h"
 #include "base/files/file_path.h"
 #include "base/message_loop/message_loop.h"
 #include "base/path_service.h"
@@ skipping 43 matching lines @@
   // Returns a HistogramTester which observed the most recent call to
   // StartFetchAndWait().
   base::HistogramTester* uma() { return uma_.get(); }
 
  private:
   ~TestMemoryDetails() override {}
 
   void OnDetailsAvailable() override {
     MetricsMemoryDetails::OnDetailsAvailable();
     // Exit the loop initiated by StartFetchAndWait().
-    base::MessageLoop::current()->Quit();
+    base::MessageLoop::current()->QuitWhenIdle();
   }
 
   scoped_ptr<base::HistogramTester> uma_;
 
   DISALLOW_COPY_AND_ASSIGN(TestMemoryDetails);
 };
 
 }  // namespace
 
 class SiteDetailsBrowserTest : public ExtensionBrowserTest {
@@ skipping 691 matching lines @@
               ElementsAre(Bucket(2, 1)));
   EXPECT_THAT(details->uma()->GetAllSamples(
                   "SiteIsolation.IsolateExtensionsProcessCountLowerBound"),
               ElementsAre(Bucket(2, 1)));
   EXPECT_THAT(details->uma()->GetAllSamples(
                   "SiteIsolation.IsolateExtensionsProcessCountNoLimit"),
               ElementsAre(Bucket(2, 1)));
 
   EXPECT_THAT(GetRenderProcessCount(), EqualsIfExtensionsIsolated(2));
 }