Correctly handle FindNext from the Find dialog.

chrome_frame/find_dialog.h

Index: chrome_frame/find_dialog.h
diff --git a/chrome_frame/find_dialog.h b/chrome_frame/find_dialog.h
index 07e2d39ea7a19de6dd2be16d968b5438a2c8e2a0..f7ccabaf48bb7d1d818df9f7ca4ed07b88c8e054 100644
--- a/chrome_frame/find_dialog.h
+++ b/chrome_frame/find_dialog.h
@@ -1,4 +1,4 @@
-// Copyright (c) 2011 The Chromium Authors. All rights reserved.
+// 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.
 
@@ -9,6 +9,7 @@
 #include <atlwin.h>
 
 #include "base/memory/ref_counted.h"
+#include "base/string16.h"
 #include "resource.h"
 #include "grit/chrome_frame_dialogs.h"
 
@@ -47,6 +48,10 @@ class CFFindDialog : public CDialogImpl<CFFindDialog> {
   static LRESULT CALLBACK GetMsgProc(int code, WPARAM wparam, LPARAM lparam);
   static HHOOK msg_hook_;
 
+  // Store the text we searched for last to determine whether we are doing a
+  // "Find" or a "Find Next".
+  string16 last_find_text_;
+
   // We don't own these, and they must exist at least as long as we do.
   scoped_refptr<ChromeFrameAutomationClient> automation_client_;
 };