[chromedriver] Fixed window SendKeys (single quote missing) problem

chrome/test/chromedriver/keycode_text_conversion_win.cc

 // Copyright (c) 2013 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.
 
 #include "chrome/test/chromedriver/keycode_text_conversion.h"
 
+#include <VersionHelpers.h>
 #include <stdlib.h>
 #include <windows.h>
 
 #include "base/strings/utf_string_conversions.h"
 #include "chrome/test/chromedriver/chrome/ui_events.h"
 
 bool ConvertKeyCodeToText(
     ui::KeyboardCode key_code, int modifiers, std::string* text,
     std::string* error_msg) {
   UINT scan_code = ::MapVirtualKeyW(key_code, MAPVK_VK_TO_VSC);
@@ skipping 33 matching lines @@
       modifiers |= kShiftKeyModifierMask;
     if (win_modifiers & 0x02)
       modifiers |= kControlKeyModifierMask;
     if (win_modifiers & 0x04)
       modifiers |= kAltKeyModifierMask;
     // Ignore bit 0x08: It is for Hankaku key.
     *necessary_modifiers = modifiers;
   }
   return translated;
 }
+
+bool SwitchToUSKeyboardLayout() {
+  bool switch_status = false;
+
+  // For LoadKeyboardLayout - Prior to Windows 8: If the specified input
+  // locale identifier is not already loaded, the function loads and
+  // activates the input locale identifier for the current thread.
+  // Beginning in Windows 8: If the specified input locale identifier is not
+  // already loaded, the function loads and activates the input
+  // locale identifier for the system.
+  // For Windows 8 - Use ActivateKeyboardLayout instead of LoadKeyboardLayout
+  if (IsWindows8OrGreater()) {
+    int size;
+    HKL * keyBoard_handles_list;

[samuong, 2015/01/23 19:36:58]

Can we use a scoped_ptr here instead? If you do, you could get rid of
|switch_status| too (just return true/false directly).

Also don't mix camelCase and snake_case - change the upper-case 'B' to a
lower-case 'b'.

[andrewcheng1, 2015/01/24 01:40:00]

 1. my initial approach do not have switch_status, and found it has too many
return statements in the codes. so I modified them to have only one return at
end.   with more return statements make codes easy to read
  2. change the upper-case 'B' to a
lower-case 'b' 
    do you mean  keyboard_handles_list?

Done.

[andrewcheng1, 2015/02/19 00:56:59]

Done.

+    TCHAR active_keyboard[KL_NAMELENGTH];
+
+    if ((size = ::GetKeyboardLayoutList(0, NULL)) > 0)
+      keyBoard_handles_list = new HKL[size];
+    else
+      return switch_status;
+
+    ::GetKeyboardLayoutList(size, keyBoard_handles_list);
+
+    for (int keyboard_index = 0; keyboard_index < size; keyboard_index++) {
+      ::ActivateKeyboardLayout(keyBoard_handles_list[keyboard_index],
+          KLF_SETFORPROCESS);
+      ::GetKeyboardLayoutName(active_keyboard);
+      // if active keyboard match US keyboard layout - 00000409
+      if (wcscmp(active_keyboard, L"00000409") == 0) {
+        switch_status = true;
+        break;

[samuong, 2015/01/23 19:36:58]

What happens if none of the HKLs match the US keyboard layout? Are we going to
set the keyboard to something that is neither the existing keyboard, nor the US
keyboard?

[andrewcheng1, 2015/01/24 01:40:00]

 I  verified this already  two weeks ago -  in  language and keyboard, remove
all  keyboards.  it will still  provide one - default(US key board).
eg.   define two keyboards - Dutch, Japanese .  it will return three in the
list.  window will provide extra default keyboard.  U.S key board will always
available.

[andrewcheng1, 2015/01/24 01:40:00]

Done.

+      }
+    }
+    delete [] keyBoard_handles_list;
+  } else {
+    HKL layout = ::LoadKeyboardLayout((LPCTSTR)"00000409", KLF_ACTIVATE);

[samuong, 2015/01/23 19:36:58]

Can you define a for "00000409" (or use an existing one, if it exists)?

[andrewcheng1, 2015/01/24 01:40:00]

Done.

I can not find any pre-defined constant for "00000409"
according to MSDN,  MS seems  use codes  as name.  So, we define our own
constant
---- following from MSDN Docs ---------
 U.S. English has a language identifier of 0x0409, so the primary U.S. English
layout is named "00000409". Variants of U.S. English layout (such as the Dvorak
layout) are named "00010409", "00020409", and so on.

[andrewcheng1, 2015/02/19 00:56:59]

Done.

[andrewcheng1, 2015/02/19 00:56:59]

Done.

+    if (!layout)
+      switch_status = false;
+    else
+      switch_status = true;
+  }
+  return switch_status;
+}