Make BrowserMainParts have an empty implementation to make embedding easier.

content/shell/shell_browser_main_parts.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 "content/shell/shell_browser_main_parts.h"
 
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/message_loop.h"
 #include "base/string_number_conversions.h"
@@ skipping 39 matching lines @@
 
 #if !defined(OS_MACOSX)
 void ShellBrowserMainParts::PreMainMessageLoopStart() {
 #if defined(OS_ANDROID)
   MessageLoopForUI::InitMessagePumpForUIFactory(&CreateMessagePumpForShell);
   MessageLoopForUI::current()->Start();
 #endif
 }
 #endif
 
-int ShellBrowserMainParts::PreCreateThreads() {
-  return 0;
-}
-
 void ShellBrowserMainParts::PreEarlyInitialization() {
 #if defined(OS_ANDROID)
   // TODO(tedchoc): Setup the NetworkChangeNotifier here.
 #endif
 }
 
 void ShellBrowserMainParts::PreMainMessageLoopRun() {
   browser_context_.reset(new ShellBrowserContext);
 
   Shell::PlatformInitialize();
@@ skipping 21 matching lines @@
                            NULL);
   }
 }
 
 void ShellBrowserMainParts::PostMainMessageLoopRun() {
   if (devtools_delegate_)
     devtools_delegate_->Stop();
   browser_context_.reset();
 }
 
-bool ShellBrowserMainParts::MainMessageLoopRun(int* result_code) {
-  return false;
-}
-
 }  // namespace