Extract InstallVerifier from ExtensionSystem.

chrome/browser/extensions/install_verifier.cc

 // Copyright 2013 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/extensions/install_verifier.h"
 
 #include <algorithm>
 #include <string>
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/metrics/field_trial.h"
 #include "base/metrics/histogram.h"
 #include "base/prefs/pref_service.h"
 #include "base/stl_util.h"
 #include "base/trace_event/trace_event.h"
 #include "chrome/browser/extensions/extension_management.h"
 #include "chrome/browser/extensions/extension_service.h"
 #include "chrome/browser/extensions/install_signer.h"
+#include "chrome/browser/extensions/install_verifier_factory.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/grit/generated_resources.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/common/content_switches.h"
 #include "extensions/browser/extension_prefs.h"
 #include "extensions/browser/extension_registry.h"
 #include "extensions/browser/extension_system.h"
 #include "extensions/browser/pref_names.h"
 #include "extensions/common/extension_set.h"
 #include "extensions/common/manifest.h"
@@ skipping 143 matching lines @@
                                  content::BrowserContext* context)
     : prefs_(prefs),
       context_(context),
       bootstrap_check_complete_(false),
       weak_factory_(this) {
 }
 
 InstallVerifier::~InstallVerifier() {}
 
 // static
+InstallVerifier* InstallVerifier::Get(
+    content::BrowserContext* browser_context) {
+  return InstallVerifierFactory::GetForBrowserContext(browser_context);
+}
+
+// static
 bool InstallVerifier::ShouldEnforce() {
   return GetStatus() >= ENFORCE;
 }
 
 // static
 bool InstallVerifier::NeedsVerification(const Extension& extension) {
   return IsFromStore(extension) && CanUseExtensionApis(extension);
 }
 
 
@@ skipping 440 matching lines @@
     }
 
     OnVerificationComplete(success, operation->type);
   }
 
   if (!operation_queue_.empty())
     BeginFetch();
 }
 
 }  // namespace extensions