[Pepper] Use platform path for QuotaReservation::GetOpenFileHandle

webkit/browser/fileapi/quota/quota_reservation_buffer.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 "webkit/browser/fileapi/quota/quota_reservation_buffer.h"
 
 #include "base/bind.h"
 #include "webkit/browser/fileapi/quota/open_file_handle.h"
 #include "webkit/browser/fileapi/quota/open_file_handle_context.h"
 #include "webkit/browser/fileapi/quota/quota_reservation.h"
@@ skipping 28 matching lines @@
   return make_scoped_ptr(new OpenFileHandle(reservation, *open_file));
 }
 
 void QuotaReservationBuffer::CommitFileGrowth(int64 quota_consumption,
                                               int64 usage_delta) {
   DCHECK(sequence_checker_.CalledOnValidSequencedThread());
   if (!reservation_manager_)
     return;
   reservation_manager_->CommitQuotaUsage(origin_, type_, usage_delta);
 
-  DCHECK_LE(quota_consumption, reserved_quota_);
   if (quota_consumption > 0) {
+    if (quota_consumption > reserved_quota_) {
+      LOG(ERROR) << "Detected over consumption of the storage quota beyond its"
+                 << " reservation";
+      quota_consumption = reserved_quota_;
+    }
+
     reserved_quota_ -= quota_consumption;
     reservation_manager_->ReleaseReservedQuota(
         origin_, type_, quota_consumption);
   }
 }
 
 void QuotaReservationBuffer::DetachOpenFileHandleContext(
     OpenFileHandleContext* open_file) {
   DCHECK(sequence_checker_.CalledOnValidSequencedThread());
   DCHECK_EQ(open_file, open_files_[open_file->platform_path()]);
@@ skipping 30 matching lines @@
   DCHECK(origin.is_valid());
   if (error == base::PLATFORM_FILE_OK && reservation_manager) {
     reservation_manager->DecrementDirtyCount(origin, type);
     return true;
   }
   return false;
 }
 
 
 }  // namespace fileapi