[FileAPI] Refine a local variable wording (1/6)

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 21 matching lines @@
 scoped_ptr<OpenFileHandle> QuotaReservationBuffer::GetOpenFileHandle(
     QuotaReservation* reservation,
     const base::FilePath& platform_path) {
   DCHECK(sequence_checker_.CalledOnValidSequencedThread());
   OpenFileHandleContext** open_file = &open_files_[platform_path];
   if (!*open_file)
     *open_file = new OpenFileHandleContext(platform_path, this);
   return make_scoped_ptr(new OpenFileHandle(reservation, *open_file));
 }
 
-void QuotaReservationBuffer::CommitFileGrowth(int64 quota_consumption,
+void QuotaReservationBuffer::CommitFileGrowth(int64 reserved_quota_consumption,
                                               int64 usage_delta) {
   DCHECK(sequence_checker_.CalledOnValidSequencedThread());
   if (!reservation_manager_)
     return;
   reservation_manager_->CommitQuotaUsage(origin_, type_, usage_delta);
 
-  if (quota_consumption > 0) {
-    if (quota_consumption > reserved_quota_) {
+  if (reserved_quota_consumption > 0) {
+    if (reserved_quota_consumption > reserved_quota_) {
       LOG(ERROR) << "Detected over consumption of the storage quota beyond its"
                  << " reservation";
-      quota_consumption = reserved_quota_;
+      reserved_quota_consumption = reserved_quota_;
     }
 
-    reserved_quota_ -= quota_consumption;
+    reserved_quota_ -= reserved_quota_consumption;
     reservation_manager_->ReleaseReservedQuota(
-        origin_, type_, quota_consumption);
+        origin_, type_, reserved_quota_consumption);
   }
 }
 
 void QuotaReservationBuffer::DetachOpenFileHandleContext(
     OpenFileHandleContext* open_file) {
   DCHECK(sequence_checker_.CalledOnValidSequencedThread());
   DCHECK_EQ(open_file, open_files_[open_file->platform_path()]);
   open_files_.erase(open_file->platform_path());
 }
 
@@ skipping 27 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