base: Stop overloading ReadFileToString()

android_webview/browser/aw_metrics_service_client.cc

 // Copyright 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 "android_webview/browser/aw_metrics_service_client.h"
 
 #include "android_webview/common/aw_version_info_values.h"
 #include "base/bind.h"
 #include "base/files/file_util.h"
 #include "base/guid.h"
@@ skipping 28 matching lines @@
   return client_info;
 }
 
 // A GUID in text form is composed of 32 hex digits and 4 hyphens.
 const size_t GUID_SIZE = 32 + 4;
 
 void GetOrCreateGUID(const base::FilePath guid_file_path, std::string* guid) {
   DCHECK_CURRENTLY_ON(content::BrowserThread::FILE);
 
   // Try to read an existing GUID.
-  if (base::ReadFileToString(guid_file_path, guid, GUID_SIZE)) {
+  if (base::ReadFileToStringWithMaxSize(guid_file_path, guid, GUID_SIZE)) {
     if (base::IsValidGUID(*guid))
       return;
     else
       LOG(ERROR) << "Found invalid GUID";
   }
 
   // We must write a new GUID.
   *guid = base::GenerateGUID();
   if (!base::WriteFile(guid_file_path, guid->c_str(), guid->size()))
     LOG(ERROR) << "Failed to write new GUID";
@@ skipping 160 matching lines @@
       request_context_(nullptr) {}
 
 AwMetricsServiceClient::~AwMetricsServiceClient() {}
 
 bool AwMetricsServiceClient::is_reporting_enabled() {
   DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
   return is_enabled_;
 }
 
 }  // namespace android_webview