Collect some histograms about signed binary downloads.

chrome/browser/safe_browsing/safe_browsing_blocking_page_unittest.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 "chrome/browser/prefs/pref_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/safe_browsing/malware_details.h"
 #include "chrome/browser/safe_browsing/safe_browsing_blocking_page.h"
 #include "chrome/common/pref_names.h"
@@ skipping 72 matching lines @@
     ResetUserResponse();
     service_ = new TestSafeBrowsingService();
   }
 
   virtual void SetUp() {
     ChromeRenderViewHostTestHarness::SetUp();
     SafeBrowsingBlockingPage::RegisterFactory(&factory_);
     ResetUserResponse();
   }
 
+  virtual void TearDown() {
+    // Release the SafeBrowsingService before the BrowserThreads are destroyed.
+    service_ = NULL;
+    ChromeRenderViewHostTestHarness::TearDown();
+  }
+
   // SafeBrowsingService::Client implementation.
   virtual void OnUrlCheckResult(const GURL& url,
                                 SafeBrowsingService::UrlCheckResult result) {
   }
   virtual void OnBlockingPageComplete(bool proceed) {
     if (proceed)
       user_response_ = OK;
     else
       user_response_ = CANCEL;
   }
@@ skipping 483 matching lines @@
 
   EXPECT_TRUE(profile->GetPrefs()->GetBoolean(
       prefs::kSafeBrowsingReportingEnabled));
 
   // Simulate the user uncheck the report agreement checkbox.
   sb_interstitial->SetReportingPreference(false);
 
   EXPECT_FALSE(profile->GetPrefs()->GetBoolean(
       prefs::kSafeBrowsingReportingEnabled));
 }