content: Let embedders know when MojoShellConnection is initialized.

chrome/browser/chrome_browser_main.h

 // 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.
 
 #ifndef CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
 #define CHROME_BROWSER_CHROME_BROWSER_MAIN_H_
 
 #include <memory>
 
 #include "base/macros.h"
@@ skipping 52 matching lines @@
   // content::BrowserMainParts overrides.
   // These are called in-order by content::BrowserMainLoop.
   // Each stage calls the same stages in any ChromeBrowserMainExtraParts added
   // with AddParts() from ChromeContentBrowserClient::CreateBrowserMainParts.
   void PreEarlyInitialization() override;
   void PostEarlyInitialization() override;
   void ToolkitInitialized() override;
   void PreMainMessageLoopStart() override;
   void PostMainMessageLoopStart() override;
   int PreCreateThreads() override;
+  void MojoShellConnectionStarted(
+      content::MojoShellConnection* connection) override;
   void PreMainMessageLoopRun() override;
   bool MainMessageLoopRun(int* result_code) override;
   void PostMainMessageLoopRun() override;
   void PostDestroyThreads() override;
 
   // Additional stages for ChromeBrowserMainExtraParts. These stages are called
   // in order from PreMainMessageLoopRun(). See implementation for details.
   virtual void PreProfileInit();
   virtual void PostProfileInit();
   virtual void PreBrowserStart();
@@ skipping 110 matching lines @@
 
   // Members initialized in PreMainMessageLoopRun, needed in
   // PreMainMessageLoopRunThreadsCreated.
   PrefService* local_state_;
   base::FilePath user_data_dir_;
 
   DISALLOW_COPY_AND_ASSIGN(ChromeBrowserMainParts);
 };
 
 #endif  // CHROME_BROWSER_CHROME_BROWSER_MAIN_H_