Removed unused header file.

mailnews/base/src/nsMessenger.cpp

@@ -55,7 +55,6 @@
 
 /* for access to webshell */
 #include "nsIDOMWindow.h"
-#include "nsIBrowserWindow.h"
 #include "nsIWebShellWindow.h"
 #include "nsIScriptGlobalObject.h"
 #include "nsIDocShell.h"

xpinstall/src/nsInstallProgressDialog.cpp

@@ -30,7 +30,6 @@
 #include "nsIAppShellComponentImpl.h"
 
 
-#include "nsIBrowserWindow.h"
 #include "nsIDOMWindow.h"
 #include "nsIServiceManager.h"
 #include "nsIDocumentViewer.h"