Removing old prefs storage for BudgetManager

chrome/browser/budget_service/budget_manager.cc

Index: chrome/browser/budget_service/budget_manager.cc
diff --git a/chrome/browser/budget_service/budget_manager.cc b/chrome/browser/budget_service/budget_manager.cc
index 7e07480342e5da6dbe94d16863a9dc0249b60599..a60053e15cd8f44eea2ce31a9c37313080972a8e 100644
--- a/chrome/browser/budget_service/budget_manager.cc
+++ b/chrome/browser/budget_service/budget_manager.cc
@@ -13,9 +13,6 @@
 #include "base/time/time.h"
 #include "chrome/browser/engagement/site_engagement_score.h"
 #include "chrome/browser/profiles/profile.h"
-#include "chrome/common/pref_names.h"
-#include "components/pref_registry/pref_registry_syncable.h"
-#include "components/prefs/pref_service.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/common/origin_util.h"
 #include "third_party/WebKit/public/platform/modules/budget_service/budget_service.mojom.h"
@@ -23,17 +20,6 @@
 
 using content::BrowserThread;
 
-namespace {
-
-// Previously, budget information was stored in the prefs. If there is any old
-// information still there, clear it.
-// TODO(harkness): Remove once Chrome 56 has branched.
-void ClearBudgetDataFromPrefs(Profile* profile) {
-  profile->GetPrefs()->ClearPref(prefs::kBackgroundBudgetMap);
-}
-
-}  // namespace
-
 BudgetManager::BudgetManager(Profile* profile)
     : profile_(profile),
       db_(profile,
@@ -43,18 +29,11 @@ BudgetManager::BudgetManager(Profile* profile)
                   base::SequencedWorkerPool::GetSequenceToken(),
                   base::SequencedWorkerPool::CONTINUE_ON_SHUTDOWN)),
       weak_ptr_factory_(this) {
-  ClearBudgetDataFromPrefs(profile);
 }
 
 BudgetManager::~BudgetManager() {}
 
 // static
-void BudgetManager::RegisterProfilePrefs(
-    user_prefs::PrefRegistrySyncable* registry) {
-  registry->RegisterDictionaryPref(prefs::kBackgroundBudgetMap);
-}
-
-// static
 double BudgetManager::GetCost(blink::mojom::BudgetOperationType type) {
   switch (type) {
     case blink::mojom::BudgetOperationType::SILENT_PUSH: