Pass FROM_HERE to ObserverListThreadSafe::Notify to improve profile.

extensions/browser/api/storage/storage_api.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 "extensions/browser/api/storage/storage_api.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
@@ skipping 70 matching lines @@
   return OneArgument(dict);
 }
 
 ExtensionFunction::ResponseValue SettingsFunction::UseWriteResult(
     ValueStore::WriteResult result,
     ValueStore* storage) {
   if (result->HasError())
     return HandleError(result->error(), storage);
 
   if (!result->changes().empty()) {
-    observers_->Notify(
-        &SettingsObserver::OnSettingsChanged,
-        extension_id(),
-        settings_namespace_,
-        ValueStoreChange::ToJson(result->changes()));
+    observers_->Notify(FROM_HERE, &SettingsObserver::OnSettingsChanged,
+                       extension_id(), settings_namespace_,
+                       ValueStoreChange::ToJson(result->changes()));
   }
 
   return NoArguments();
 }
 
 ExtensionFunction::ResponseValue SettingsFunction::HandleError(
     const ValueStore::Error& error,
     ValueStore* storage) {
   // If the method failed due to corruption, and we haven't tried to fix it, we
   // can try to restore the storage and re-run it. Otherwise, the method has
@@ skipping 186 matching lines @@
 StorageStorageAreaClearFunction::RunWithStorage(ValueStore* storage) {
   return UseWriteResult(storage->Clear(), storage);
 }
 
 void StorageStorageAreaClearFunction::GetQuotaLimitHeuristics(
     QuotaLimitHeuristics* heuristics) const {
   GetModificationQuotaLimitHeuristics(heuristics);
 }
 
 }  // namespace extensions