Move/replace/rename URL-based extension getters from ExtensionService to/in ExtensionSet.

chrome/browser/extensions/crx_installer.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/extensions/crx_installer.h"
 
 #include <map>
 #include <set>
 
 #include "base/bind.h"
@@ skipping 373 matching lines @@
 
   if (!frontend_weak_->extension_prefs()->IsExtensionAllowedByPolicy(
           extension_->id(), install_source_)) {
     ReportFailureFromUIThread(
         l10n_util::GetStringUTF8(IDS_EXTENSION_CANT_INSTALL_POLICY_BLACKLIST));
     return;
   }
 
   GURL overlapping_url;
   const Extension* overlapping_extension =
-      frontend_weak_->
-      GetExtensionByOverlappingWebExtent(extension_->web_extent());
+      frontend_weak_->extensions()->
+      GetHostedAppByOverlappingWebExtent(extension_->web_extent());
   if (overlapping_extension &&
       overlapping_extension->id() != extension_->id()) {
     ReportFailureFromUIThread(l10n_util::GetStringFUTF8(
         IDS_EXTENSION_OVERLAPPING_WEB_EXTENT,
         UTF8ToUTF16(overlapping_extension->name())));
     return;
   }
 
   current_version_ =
       frontend_weak_->extension_prefs()->GetVersionString(extension_->id());
@@ skipping 195 matching lines @@
   // Some users (such as the download shelf) need to know when a
   // CRXInstaller is done.  Listening for the EXTENSION_* events
   // is problematic because they don't know anything about the
   // extension before it is unpacked, so they cannot filter based
   // on the extension.
   content::NotificationService::current()->Notify(
       chrome::NOTIFICATION_CRX_INSTALLER_DONE,
       content::Source<CrxInstaller>(this),
       content::Details<const Extension>(extension));
 }