Implement the load chrome.dll before file version for Google Chrome builds.

chrome/app/google_update_client.h

 // Copyright (c) 2006-2008 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 is the Chrome-GoogleUpdater integration glue. Current features of this
 // code include:
 // * checks to ensure that client is properly registered with GoogleUpdater
 // * versioned directory launcher to allow for completely transparent silent
 //   autoupdates
 
@@ skipping 23 matching lines @@
   // if Init() was unable to obtain one.
   const wchar_t* GetVersion() const;
 
   // Init must be called prior to other methods.
   // client_guid is the guid that you registered with Google Update when you
   // installed.
   // Returns false if client is not properly registered with GoogleUpdate.  If
   // not registered, autoupdates won't be performed for this client.
   bool Init(const wchar_t* client_guid, const wchar_t* client_dll);
 
+  // Load the application's main DLL.
+  // - looks up the registered version via GoogleUpdate, loads dll from version
+  //   dir (e.g. Program Files/Google/1.0.101.0/chrome.dll).  If chrome.dll is
+  //   found in this path the version is stored in the environment block such
+  //   that subsequent launches invoke the same dll version.
+  bool Load();
+
   // Launches your app's main code and initializes Google Update services.
-  // - looks up the registered version via GoogleUpdate, loads dll from version
-  //   dir (e.g. Program Files/Google/1.0.101.0/chrome.dll) and calls the
-  //   entry_name. If chrome.dll is found in this path the version is stored
-  //   in the environment block such that subsequent launches invoke the
-  //   save dll version.
+  // - Calls the entry_name function of your application's DLL.
   // - instance is handle to the current instance of application
   // - sandbox provides information about sandbox services
   // - command_line contains command line parameters
   // - show_command specifies how the window is to be shown
   // - entry_name is the function of type DLL_MAIN that is called
   //   from chrome.dll
   // - ret is an out param with the return value of entry
   // Returns false if unable to load the dll or find entry_name's proc addr.
   bool Launch(HINSTANCE instance, sandbox::SandboxInterfaceInfo* sandbox,
               wchar_t* command_line, int show_command, const char* entry_name,
               int* ret);
 
  private:
   // disallow copy ctor and operator=
   GoogleUpdateClient(const GoogleUpdateClient&);
   void operator=(const GoogleUpdateClient&);
 
   // The GUID that this client has registered with GoogleUpdate for autoupdate.
   std::wstring guid_;
   // The name of the dll to load.
   std::wstring dll_;
+  // The handle to dll_ after it has been loaded.
+  HINSTANCE dll_handle_;
   // The current version of this client registered with GoogleUpdate.
   wchar_t* version_;
   // The location of current chrome.dll.
   wchar_t dll_path_[MAX_PATH];
 };
 
 }  // namespace google_update
 
 #endif  // CHROME_APP_GOOGLE_UPDATE_CLIENT_H_