drive: Rename FileCache methods in a blocking pool centric manner

chrome/browser/chromeos/drive/stale_cache_files_remover.cc

 // Copyright (c) 2012 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 "chrome/browser/chromeos/drive/stale_cache_files_remover.h"
 
 #include "base/bind.h"
 #include "chrome/browser/chromeos/drive/drive.pb.h"
 #include "chrome/browser/chromeos/drive/file_cache.h"
 #include "chrome/browser/chromeos/drive/file_system.h"
@@ skipping 25 matching lines @@
   file_system_->AddObserver(this);
 }
 
 StaleCacheFilesRemover::~StaleCacheFilesRemover() {
   file_system_->RemoveObserver(this);
 }
 
 void StaleCacheFilesRemover::OnInitialLoadFinished() {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
-  cache_->Iterate(
+  cache_->IterateOnUIThread(
       base::Bind(
           &StaleCacheFilesRemover::GetEntryInfoAndRemoveCacheIfNecessary,
           weak_ptr_factory_.GetWeakPtr()),
       base::Bind(&base::DoNothing));
 }
 
 void StaleCacheFilesRemover::GetEntryInfoAndRemoveCacheIfNecessary(
     const std::string& resource_id,
     const FileCacheEntry& cache_entry) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   file_system_->GetEntryInfoByResourceId(
       resource_id,
       base::Bind(&StaleCacheFilesRemover::RemoveCacheIfNecessary,
                  weak_ptr_factory_.GetWeakPtr(),
                  resource_id,
                  cache_entry.md5()));
 }
 
 void StaleCacheFilesRemover::RemoveCacheIfNecessary(
     const std::string& resource_id,
     const std::string& cache_md5,
     FileError error,
     const base::FilePath& drive_file_path,
     scoped_ptr<ResourceEntry> entry) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
 
   // The entry is not found in the file system.
   if (error != FILE_ERROR_OK) {
-    cache_->Remove(resource_id, base::Bind(&EmitErrorLog, resource_id));
+    cache_->RemoveOnUIThread(resource_id,
+                             base::Bind(&EmitErrorLog, resource_id));
     return;
   }
 
   // The entry is found but the MD5 does not match.
   DCHECK(entry.get());
   if (!entry->has_file_specific_info() ||
       cache_md5 != entry->file_specific_info().file_md5()) {
-    cache_->Remove(resource_id, base::Bind(&EmitErrorLog, resource_id));
+    cache_->RemoveOnUIThread(resource_id,
+                             base::Bind(&EmitErrorLog, resource_id));
     return;
   }
 }
 
 }  // namespace drive