Making google update UAC prompt launch in the foreground

chrome/browser/google_update.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.
 
 #ifndef CHROME_BROWSER_GOOGLE_UPDATE_H_
 #define CHROME_BROWSER_GOOGLE_UPDATE_H_
 
 #include <string>
 
 #include "base/basictypes.h"
 #include "base/ref_counted.h"
 #include "google_update_idl.h"
 
 class MessageLoop;
+namespace views {
+class Window;
+}
 
 // The status of the upgrade. UPGRADE_STARTED and UPGRADE_CHECK_STARTED are
 // internal states and will not be reported as results to the listener.
 enum GoogleUpdateUpgradeResult {
   // The upgrade has started.
   UPGRADE_STARTED = 0,
   // A check for upgrade has been initiated.
   UPGRADE_CHECK_STARTED,
   // An update is available.
   UPGRADE_IS_AVAILABLE,
@@ skipping 52 matching lines @@
 //
 ////////////////////////////////////////////////////////////////////////////////
 class GoogleUpdate : public base::RefCountedThreadSafe<GoogleUpdate> {
  public:
   GoogleUpdate();
   virtual ~GoogleUpdate();
 
   // Ask Google Update to see if a new version is available. If the parameter
   // |install_if_newer| is true then Google Update will also install that new
   // version.
-  void CheckForUpdate(bool install_if_newer);
+  // |window| should point to a foreground window. This is needed to ensure
+  // that Vista/Windows 7 UAC prompts show up in the foreground. It may also
+  // be null.
+  void CheckForUpdate(bool install_if_newer, views::Window* window);
 
   // Adds/removes a listener to report status back to. Only one listener is
   // maintained at the moment.
   void AddStatusChangeListener(GoogleUpdateStatusListener* listener);
   void RemoveStatusChangeListener();
 
  private:
   // We need to run the update check on another thread than the main thread, and
   // therefore CheckForUpdate will delegate to this function. |main_loop| points
   // to the message loop that we want the response to come from.
-  bool InitiateGoogleUpdateCheck(bool install_if_newer, MessageLoop* main_loop);
+  // |window| should point to a foreground window. This is needed to ensure that
+  // Vista/Windows 7 UAC prompts show up in the foreground. It may also be null.
+  bool InitiateGoogleUpdateCheck(bool install_if_newer, views::Window* window,
+                                 MessageLoop* main_loop);
 
   // This function reports the results of the GoogleUpdate operation to the
   // listener. If results indicates an error, the error_code will indicate which
   // error occurred.
   // Note, after this function completes, this object will have deleted itself.
   void ReportResults(GoogleUpdateUpgradeResult results,
                      GoogleUpdateErrorCode error_code);
 
   // This function reports failure from the Google Update operation to the
   // listener.
   // Note, after this function completes, this object will have deleted itself.
   bool ReportFailure(HRESULT hr, GoogleUpdateErrorCode error_code,
                      MessageLoop* main_loop);
 
   // The listener who is interested in finding out the result of the operation.
   GoogleUpdateStatusListener* listener_;
 
   // Which version string Google Update found (if a new one was available).
   // Otherwise, this will be blank.
   std::wstring version_available_;
 
   DISALLOW_EVIL_CONSTRUCTORS(GoogleUpdate);
 };
 
 #endif  // CHROME_BROWSER_GOOGLE_UPDATE_H_