Media Galleries: Omit ById in various method names, since all operations are now by id.

components/storage_monitor/test_media_transfer_protocol_manager_linux.cc

 // Copyright 2014 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 "components/storage_monitor/test_media_transfer_protocol_manager_linux.h"
 
 #include "device/media_transfer_protocol/mtp_file_entry.pb.h"
 
 namespace storage_monitor {
 
@@ skipping 23 matching lines @@
     const OpenStorageCallback& callback) {
   callback.Run("", true);
 }
 
 void TestMediaTransferProtocolManagerLinux::CloseStorage(
     const std::string& storage_handle,
     const CloseStorageCallback& callback) {
   callback.Run(true);
 }
 
-void TestMediaTransferProtocolManagerLinux::ReadDirectoryById(
+void TestMediaTransferProtocolManagerLinux::ReadDirectory(
     const std::string& storage_handle,
     uint32 file_id,
     const ReadDirectoryCallback& callback) {
   callback.Run(std::vector<MtpFileEntry>(),
                false /* no more entries*/,
                true /* error */);
 }
 
-void TestMediaTransferProtocolManagerLinux::ReadFileChunkById(
+void TestMediaTransferProtocolManagerLinux::ReadFileChunk(
     const std::string& storage_handle,
     uint32 file_id,
     uint32 offset,
     uint32 count,
     const ReadFileCallback& callback) {
   callback.Run(std::string(), true);
 }
 
-void TestMediaTransferProtocolManagerLinux::GetFileInfoById(
+void TestMediaTransferProtocolManagerLinux::GetFileInfo(
     const std::string& storage_handle,
     uint32 file_id,
     const GetFileInfoCallback& callback) {
   callback.Run(MtpFileEntry(), true);
 }
 
 }  // namespace storage_monitor