Add default icon to app_host.exe, and use it in shortcuts during installation.

chrome/installer/util/browser_distribution.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.
 //
 // This file declares a class that contains various method related to branding.
 
 #ifndef CHROME_INSTALLER_UTIL_BROWSER_DISTRIBUTION_H_
 #define CHROME_INSTALLER_UTIL_BROWSER_DISTRIBUTION_H_
 
 #include <string>
@@ skipping 103 matching lines @@
   virtual string16 GetUninstallLinkName();
 
   virtual string16 GetUninstallRegPath();
 
   virtual string16 GetVersionKey();
 
   virtual bool CanSetAsDefault();
 
   virtual bool CanCreateDesktopShortcuts();
 
+  // Returns the executable filename (not path) that contains the product icon.
+  virtual string16 GetIconFilename();
+
+  // Returns the index of the icon for the product, inside the file specified by
+  // GetIconFilename().
   virtual int GetIconIndex();
 
   virtual bool GetChromeChannel(string16* channel);
 
   // Returns true if the distribution includes a DelegateExecute verb handler,
   // and provides the CommandExecuteImpl class UUID if |handler_class_uuid| is
   // non-NULL.
   virtual bool GetCommandExecuteImplClsid(string16* handler_class_uuid);
 
   virtual void UpdateInstallStatus(bool system_install,
@@ skipping 31 matching lines @@
 
   const Type type_;
 
  private:
   BrowserDistribution();
 
   DISALLOW_COPY_AND_ASSIGN(BrowserDistribution);
 };
 
 #endif  // CHROME_INSTALLER_UTIL_BROWSER_DISTRIBUTION_H_