[Pepper] Wire up append mode writing support of FileIO

content/browser/renderer_host/pepper/quota_reservation.cc

 // Copyright 2013 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 "content/browser/renderer_host/pepper/quota_reservation.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "content/public/browser/browser_thread.h"
 #include "webkit/browser/fileapi/file_system_operation_runner.h"
@@ skipping 103 matching lines @@
                  callback));
 }
 
 void QuotaReservation::OnClientCrash() {
   quota_reservation_->OnClientCrash();
 }
 
 void QuotaReservation::GotReservedQuota(
     const ReserveQuotaCallback& callback,
     base::File::Error error) {
-  ppapi::FileSizeMap max_written_offsets;
-  for (FileMap::iterator it = files_.begin(); it != files_.end(); ++ it) {
-    max_written_offsets.insert(
-        std::make_pair(it->first, it->second->GetMaxWrittenOffset()));
-  }
+  ppapi::FileSizeMap file_sizes;
+  for (FileMap::iterator it = files_.begin(); it != files_.end(); ++ it)
+    file_sizes[it->first] = it->second->GetMaxWrittenOffset();
 
   if (file_system_context_) {
     BrowserThread::PostTask(
         BrowserThread::IO,
         FROM_HERE,
         base::Bind(callback,
                    quota_reservation_->remaining_quota(),
-                   max_written_offsets));
+                   file_sizes));
   } else {
     // Unit testing code path.
-    callback.Run(quota_reservation_->remaining_quota(), max_written_offsets);
+    callback.Run(quota_reservation_->remaining_quota(), file_sizes);
   }
 }
 
 void QuotaReservation::DeleteOnCorrectThread() const {
   if (file_system_context_ &&
       !file_system_context_->
           default_file_task_runner()->RunsTasksOnCurrentThread()) {
     file_system_context_->default_file_task_runner()->DeleteSoon(
         FROM_HERE,
         this);
   } else {
     // We're on the right thread to delete, or unit test.
     delete this;
   }
 }
 
 }  // namespace content