Extract shell methods from ApplicationImpl into a base class, and pass this to Initialize() instead.

components/font_service/font_service_app.cc

 // Copyright 2015 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/font_service/font_service_app.h"
 
 #include <utility>
 
 #include "base/files/file.h"
 #include "base/files/file_path.h"
@@ skipping 40 matching lines @@
 }
 
 }  // namespace
 
 namespace font_service {
 
 FontServiceApp::FontServiceApp() {}
 
 FontServiceApp::~FontServiceApp() {}
 
-void FontServiceApp::Initialize(mojo::ApplicationImpl* app) {
-  tracing_.Initialize(app);
+void FontServiceApp::Initialize(mojo::Shell* shell, const std::string& url,
+                                uint32_t id) {
+  tracing_.Initialize(shell, url);
 }
 
 bool FontServiceApp::AcceptConnection(
     mojo::ApplicationConnection* connection) {
   connection->AddService(this);
   return true;
 }
 
 void FontServiceApp::Create(mojo::ApplicationConnection* connection,
                             mojo::InterfaceRequest<FontService> request) {
@@ skipping 44 matching lines @@
   int count = paths_.count();
   for (int i = 0; i < count; ++i) {
     if (path == *paths_[i])
       return i;
   }
   *paths_.append() = new SkString(path);
   return count;
 }
 
 }  // namespace font_service