[KeyboardEvent] Use DOM |code| rather than Windows-based key code

ui/events/event_utils.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 UI_EVENTS_EVENT_UTILS_H_
 #define UI_EVENTS_EVENT_UTILS_H_
 
 #include "base/basictypes.h"
 #include "base/event_types.h"
 #include "base/memory/scoped_ptr.h"
@@ skipping 66 matching lines @@
 #endif
 
 // Returns the KeyboardCode from a native event.
 EVENTS_EXPORT KeyboardCode KeyboardCodeFromNative(
     const base::NativeEvent& native_event);
 
 // Returns the DOM KeyboardEvent code (physical location in the
 // keyboard) from a native event.
 EVENTS_EXPORT DomCode CodeFromNative(const base::NativeEvent& native_event);
 
-// Returns the platform related key code. For X11, it is xksym value.
+// Returns the platform related key code (interpretation, not scan code).
+// For X11 and xkbcommon, it is KeySym value.
 EVENTS_EXPORT uint32 PlatformKeycodeFromNative(
     const base::NativeEvent& native_event);
 
-// Returns a control character sequences from a |windows_key_code|.
-EVENTS_EXPORT base::char16 GetControlCharacterForKeycode(int windows_key_code,
-                                                         bool shift);
-
 // Returns true if the keyboard event is a character event rather than
 // a keystroke event.
 EVENTS_EXPORT bool IsCharFromNative(const base::NativeEvent& native_event);
 
 // Returns the flags of the button that changed during a press/release.
 EVENTS_EXPORT int GetChangedMouseButtonFlagsFromNative(
     const base::NativeEvent& native_event);
 
 // Gets the mouse wheel offsets from a native event.
 EVENTS_EXPORT gfx::Vector2d GetMouseWheelOffset(
@@ skipping 70 matching lines @@
 // Update the native X11 event to correspond to the new button flags.
 EVENTS_EXPORT void UpdateX11EventForChangedButtonFlags(MouseEvent* event);
 #endif
 
 // Registers a custom event type.
 EVENTS_EXPORT int RegisterCustomEventType();
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_EVENT_UTILS_H_