[chromedriver] Don't generate char events on Mac for KeyConverter.AllShorthandKeys.

chrome/test/chromedriver/key_converter_unittest.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 <stddef.h>
 
 #include <list>
 #include <string>
 
 #include "base/macros.h"
@@ skipping 257 matching lines @@
 #define MAYBE_AllShorthandKeys AllShorthandKeys
 #endif
 
 TEST(KeyConverter, MAYBE_AllShorthandKeys) {
   KeyEventBuilder builder;
   std::list<KeyEvent> key_events;
   builder.SetKeyCode(ui::VKEY_RETURN)
       ->SetText("\r", "\r")
       ->Generate(&key_events);
   builder.Generate(&key_events);
-  builder.SetKeyCode(ui::VKEY_TAB)->SetText("\t", "\t")->Generate(&key_events);
-  builder.SetKeyCode(ui::VKEY_BACK)->SetText("\b", "\b")->Generate(&key_events);
+  builder.SetKeyCode(ui::VKEY_TAB)->SetText("\t", "\t");
+#if defined(USE_AURA) || defined(OS_LINUX)
+  builder.Generate(&key_events);
+#else
+  key_events.push_back(builder.SetType(kRawKeyDownEventType)->Build());
+  key_events.push_back(builder.SetType(kKeyUpEventType)->Build());
+#endif
+  builder.SetKeyCode(ui::VKEY_BACK)->SetText("\b", "\b");
+#if defined(USE_AURA) || defined(OS_LINUX)
+  builder.Generate(&key_events);
+#else
+  key_events.push_back(builder.SetType(kRawKeyDownEventType)->Build());
+  key_events.push_back(builder.SetType(kKeyUpEventType)->Build());
+#endif
   builder.SetKeyCode(ui::VKEY_SPACE)->SetText(" ", " ")->Generate(&key_events);
   CheckEventsReleaseModifiers("\n\r\n\t\b ", key_events);
 }
 
 #if defined(OS_LINUX)
 // Fails on bots: crbug.com/174962
 #define MAYBE_AllEnglishKeyboardSymbols DISABLED_AllEnglishKeyboardSymbols
 #else
 #define MAYBE_AllEnglishKeyboardSymbols AllEnglishKeyboardSymbols
 #endif
@@ skipping 141 matching lines @@
                            ->SetKeyCode(ui::VKEY_SHIFT)
                            ->SetModifiers(0)
                            ->Build());
   key_events.push_back(builder.SetKeyCode(ui::VKEY_CONTROL)->Build());
   base::string16 keys;
   keys.push_back(static_cast<base::char16>(0xE008U));
   keys.push_back(static_cast<base::char16>(0xE009U));
 
   CheckEvents(keys, key_events, true /* release_modifiers */, 0);
 }