Allow only a user gesture to trigger autofill popup

content/test/mock_keyboard_driver_win.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.
 
 #ifndef CONTENT_TEST_MOCK_KEYBOARD_DRIVER_WIN_H_
 #define CONTENT_TEST_MOCK_KEYBOARD_DRIVER_WIN_H_
 
 #include <windows.h>
 
 #include <string>
 #include <vector>
 #include "base/basictypes.h"
 
 namespace content {
 
 // Implements the platform-dependent part of a pseudo keyboard device for
 // Windows.
 class MockKeyboardDriverWin {
  public:
   MockKeyboardDriverWin();
   ~MockKeyboardDriverWin();
 
   bool SetLayout(int layout);
-  bool SetModifiers(int modifiers);
-  int GetCharacters(int key_code, std::wstring* code);
+  void SetModifiers(int modifiers);
+  int GetCharacters(int key_code, std::wstring* code) const;
 
  private:
   void MaybeUnloadActiveLayout();
 
   // The list of keyboard drivers that are installed on this machine.
   std::vector<HKL> orig_keyboard_layouts_list_;
   // The active keyboard driver at the time the Ctor was called.
   HKL original_keyboard_layout_;
   // The currently active driver.
   HKL active_keyboard_layout_;
   BYTE original_keyboard_states_[256];
 
   BYTE keyboard_states_[256];
 
   DISALLOW_COPY_AND_ASSIGN(MockKeyboardDriverWin);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_TEST_MOCK_KEYBOARD_DRIVER_WIN_H_