arc: Use GET_INTERFACE_FOR_METHOD macro

components/arc/clipboard/arc_clipboard_bridge.cc

 // Copyright 2016 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/arc/clipboard/arc_clipboard_bridge.h"
 
 #include "base/logging.h"
 #include "base/strings/utf_string_conversions.h"
 #include "base/threading/thread_checker.h"
 #include "components/arc/arc_bridge_service.h"
 #include "ui/base/clipboard/clipboard.h"
 #include "ui/base/clipboard/clipboard_types.h"
 #include "ui/base/clipboard/scoped_clipboard_writer.h"
 
 namespace arc {
 
 ArcClipboardBridge::ArcClipboardBridge(ArcBridgeService* bridge_service)
     : ArcService(bridge_service), binding_(this) {
   arc_bridge_service()->clipboard()->AddObserver(this);
 }
 
 ArcClipboardBridge::~ArcClipboardBridge() {
   DCHECK(CalledOnValidThread());
   arc_bridge_service()->clipboard()->RemoveObserver(this);
 }
 
 void ArcClipboardBridge::OnInstanceReady() {
   mojom::ClipboardInstance* clipboard_instance =
-      arc_bridge_service()->clipboard()->GetInstanceForMethod("Init");
+      GET_INSTANCE_FOR_METHOD(arc_bridge_service()->clipboard(), Init);
   DCHECK(clipboard_instance);
   clipboard_instance->Init(binding_.CreateInterfacePtrAndBind());
 }
 
 void ArcClipboardBridge::SetTextContent(const std::string& text) {
   DCHECK(CalledOnValidThread());
   ui::ScopedClipboardWriter writer(ui::CLIPBOARD_TYPE_COPY_PASTE);
   writer.WriteText(base::UTF8ToUTF16(text));
 }
 
 void ArcClipboardBridge::GetTextContent() {
   DCHECK(CalledOnValidThread());
 
   base::string16 text;
   ui::Clipboard* clipboard = ui::Clipboard::GetForCurrentThread();
   clipboard->ReadText(ui::CLIPBOARD_TYPE_COPY_PASTE, &text);
 
-  mojom::ClipboardInstance* clipboard_instance =
-      arc_bridge_service()->clipboard()->GetInstanceForMethod(
-          "OnGetTextContent");
+  mojom::ClipboardInstance* clipboard_instance = GET_INSTANCE_FOR_METHOD(
+      arc_bridge_service()->clipboard(), OnGetTextContent);
   if (!clipboard_instance)
     return;
   clipboard_instance->OnGetTextContent(base::UTF16ToUTF8(text));
 }
 
 bool ArcClipboardBridge::CalledOnValidThread() {
   // Make sure access to the Chrome clipboard is happening in the UI thread.
   return thread_checker_.CalledOnValidThread();
 }
 
 }  // namespace arc