Make all quota-exceeding messages in the storage API explain what the failure

chrome/browser/extensions/extension_function.cc

 // Copyright (c) 2012 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/extension_function.h"
 
 #include "base/json/json_writer.h"
 #include "base/logging.h"
 #include "chrome/browser/extensions/extension_function_dispatcher.h"
 #include "chrome/browser/extensions/extension_service.h"
@@ skipping 69 matching lines @@
 }
 
 IOThreadExtensionFunction* ExtensionFunction::AsIOThreadExtensionFunction() {
   return NULL;
 }
 
 bool ExtensionFunction::HasPermission() {
   return extension_->HasAPIPermission(name_);
 }
 
-void ExtensionFunction::OnQuotaExceeded() {
-  error_ = QuotaLimitHeuristic::kGenericOverQuotaError;
+void ExtensionFunction::OnQuotaExceeded(const std::string& violation_error) {
+  error_ = violation_error;
   SendResponse(false);
 }
 
 void ExtensionFunction::SetArgs(const base::ListValue* args) {
   DCHECK(!args_.get());  // Should only be called once.
   args_.reset(args->DeepCopy());
 }
 
 void ExtensionFunction::SetResult(base::Value* result) {
   results_.reset(new base::ListValue());
@@ skipping 205 matching lines @@
 
 SyncIOThreadExtensionFunction::SyncIOThreadExtensionFunction() {
 }
 
 SyncIOThreadExtensionFunction::~SyncIOThreadExtensionFunction() {
 }
 
 void SyncIOThreadExtensionFunction::Run() {
   SendResponse(RunImpl());
 }