Show the exact cache size for time ranges if supported

chrome/browser/browsing_data/cache_counter.cc

 // Copyright (c) 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/browsing_data/cache_counter.h"
 #include "chrome/browser/profiles/profile.h"
 #include "components/browsing_data/content/conditional_cache_counting_helper.h"
 #include "components/browsing_data/core/pref_names.h"
 #include "content/public/browser/browser_thread.h"
 #include "net/base/net_errors.h"
@@ skipping 12 matching lines @@
       weak_ptr_factory_(this) {}
 
 CacheCounter::~CacheCounter() {
 }
 
 const char* CacheCounter::GetPrefName() const {
   return browsing_data::prefs::kDeleteCache;
 }
 
 void CacheCounter::Count() {
-  bool is_upper_limit = !GetPeriodStart().is_null();
   base::WeakPtr<browsing_data::ConditionalCacheCountingHelper> counter =
       browsing_data::ConditionalCacheCountingHelper::CreateForRange(
           content::BrowserContext::GetDefaultStoragePartition(profile_),
-          base::Time(), base::Time::Max())
+          GetPeriodStart(), base::Time::Max())
           ->CountAndDestroySelfWhenFinished(
               base::Bind(&CacheCounter::OnCacheSizeCalculated,
-                         weak_ptr_factory_.GetWeakPtr(), is_upper_limit));
+                         weak_ptr_factory_.GetWeakPtr()));
 }
 
-void CacheCounter::OnCacheSizeCalculated(bool is_upper_limit,
-                                         int64_t result_bytes) {
+void CacheCounter::OnCacheSizeCalculated(int64_t result_bytes,
+                                         bool is_upper_limit) {
   // A value less than 0 means a net error code.
   if (result_bytes < 0)
     return;
   auto result =
       base::MakeUnique<CacheResult>(this, result_bytes, is_upper_limit);
   ReportResult(std::move(result));
 }