Clean up ProfileManager interface.

chrome/browser/metrics/extensions_metrics_provider.cc

 // Copyright 2014 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/metrics/extensions_metrics_provider.h"
 
 #include <algorithm>
 #include <set>
 #include <vector>
 
@@ skipping 130 matching lines @@
   // If there is a cached profile, reuse that.  However, check that it is still
   // valid first.
   if (cached_profile_ && profile_manager->IsValidProfile(cached_profile_))
     return cached_profile_;
 
   // Find a suitable profile to use, and cache it so that we continue to report
   // statistics on the same profile.  We would simply use
   // ProfileManager::GetLastUsedProfile(), except that that has the side effect
   // of creating a profile if it does not yet exist.
   cached_profile_ = profile_manager->GetProfileByPath(
-      profile_manager->GetLastUsedProfileDir(profile_manager->user_data_dir()));
+      profile_manager->GetLastUsedProfileDir());
   if (cached_profile_) {
     // Ensure that the returned profile is not an incognito profile.
     cached_profile_ = cached_profile_->GetOriginalProfile();
   }
   return cached_profile_;
 }
 
 scoped_ptr<extensions::ExtensionSet>
 ExtensionsMetricsProvider::GetInstalledExtensions(Profile* profile) {
   if (profile) {
@@ skipping 64 matching lines @@
        it != extensions->end();
        ++it) {
     buckets.insert(HashExtension((*it)->id(), client_key));
   }
 
   for (std::set<int>::const_iterator it = buckets.begin(); it != buckets.end();
        ++it) {
     system_profile->add_occupied_extension_bucket(*it);
   }
 }