drive: Rename FileCache methods in a blocking pool centric manner

chrome/browser/chromeos/drive/file_system/update_operation.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/file_system/update_operation.h"
 
 #include "base/file_util.h"
 #include "chrome/browser/chromeos/drive/drive.pb.h"
 #include "chrome/browser/chromeos/drive/file_cache.h"
 #include "chrome/browser/chromeos/drive/file_system/operation_observer.h"
@@ skipping 58 matching lines @@
   }
 
   DCHECK(entry.get());
   if (entry->file_info().is_directory()) {
     callback.Run(FILE_ERROR_NOT_FOUND);
     return;
   }
 
   // Extract a pointer before we call Pass() so we can use it below.
   ResourceEntry* entry_ptr = entry.get();
-  cache_->GetFile(entry_ptr->resource_id(),
-                  entry_ptr->file_specific_info().file_md5(),
-                  base::Bind(&UpdateOperation::OnGetFileCompleteForUpdateFile,
-                             weak_ptr_factory_.GetWeakPtr(),
-                             context,
-                             callback,
-                             drive_file_path,
-                             base::Passed(&entry)));
+  cache_->GetFileOnUIThread(
+      entry_ptr->resource_id(),
+      entry_ptr->file_specific_info().file_md5(),
+      base::Bind(&UpdateOperation::OnGetFileCompleteForUpdateFile,
+                 weak_ptr_factory_.GetWeakPtr(),
+                 context,
+                 callback,
+                 drive_file_path,
+                 base::Passed(&entry)));
 }
 
 void UpdateOperation::OnGetFileCompleteForUpdateFile(
     DriveClientContext context,
     const FileOperationCallback& callback,
     const base::FilePath& drive_file_path,
     scoped_ptr<ResourceEntry> entry,
     FileError error,
     const base::FilePath& cache_file_path) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
@@ skipping 51 matching lines @@
   }
 
   DCHECK(entry.get());
   DCHECK(entry->has_resource_id());
   DCHECK(entry->has_file_specific_info());
   DCHECK(entry->file_specific_info().has_file_md5());
 
   observer_->OnDirectoryChangedByOperation(drive_file_path.DirName());
 
   // Clear the dirty bit if we have updated an existing file.
-  cache_->ClearDirty(entry->resource_id(),
-                     entry->file_specific_info().file_md5(),
-                     callback);
+  cache_->ClearDirtyOnUIThread(entry->resource_id(),
+                               entry->file_specific_info().file_md5(),
+                               callback);
 }
 
 }  // namespace file_system
 }  // namespace drive