[Pepper] Wire up append mode writing support of FileIO

content/browser/renderer_host/pepper/pepper_file_system_browser_host.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/pepper_file_system_browser_host.h"
 
 #include "base/bind.h"
 #include "base/callback.h"
 #include "content/browser/renderer_host/pepper/pepper_file_io_host.h"
 #include "content/browser/renderer_host/pepper/quota_reservation.h"
@@ skipping 347 matching lines @@
       base::Bind(&GetFileSystemContextFromRenderId, render_process_id),
       base::Bind(&PepperFileSystemBrowserHost::OpenIsolatedFileSystem,
                  weak_factory_.GetWeakPtr(),
                  context->MakeReplyMessageContext(), fsid, type));
   return PP_OK_COMPLETIONPENDING;
 }
 
 int32_t PepperFileSystemBrowserHost::OnHostMsgReserveQuota(
     ppapi::host::HostMessageContext* context,
     int64_t amount,
-    const ppapi::FileSizeMap& file_sizes) {
+    const ppapi::FileGrowthMap& file_growths) {
   DCHECK(ChecksQuota());
   DCHECK(amount > 0);
 
   if (reserving_quota_)
     return PP_ERROR_INPROGRESS;
   reserving_quota_ = true;
 
-  ppapi::FileGrowthMap file_growths;
-  for (ppapi::FileSizeMap::const_iterator it = file_sizes.begin();
-       it != file_sizes.end(); ++it)
-    file_growths[it->first] = ppapi::FileGrowth(it->second, 0);
-
   int64_t reservation_amount = std::max<int64_t>(kMinimumQuotaReservationSize,
                                                  amount);
   file_system_context_->default_file_task_runner()->PostTask(
       FROM_HERE,
       base::Bind(&QuotaReservation::ReserveQuota,
                  quota_reservation_,
                  reservation_amount,
                  file_growths,
                  base::Bind(&PepperFileSystemBrowserHost::GotReservedQuota,
                             weak_factory_.GetWeakPtr(),
@@ skipping 113 matching lines @@
     if (!IsAsciiAlpha(*it) && !IsAsciiDigit(*it) &&
         *it != '.' && *it != '_' && *it != '-') {
       LOG(WARNING) << "Failed to generate a plugin id.";
       return std::string();
     }
   }
   return output;
 }
 
 }  // namespace content