mojo: Plumb through sufficient context to make real blink::WebInputEvents.

mojo/services/public/interfaces/input_events/input_events.mojom

 // Copyright 2014 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.
 
 import "mojo/services/public/interfaces/geometry/geometry.mojom"
 import "mojo/services/public/interfaces/input_events/input_event_constants.mojom"
+import "mojo/services/public/interfaces/input_events/input_key_codes.mojom"
 
 module mojo {
 
 struct LocationData {
   Point in_view_location;
   Point? screen_location;
 };
 
 struct KeyData {
+  // The chromium event key code; these values are from the ui/ KeyCode enum,
+  // which has the fun property of being neither consistently the Windows key
+  // code, nor the X11 keycodes. (This value is consistent across platforms
+  // for basic ASCII characters; it will differ for modifiers. We don't define
+  // this as a mojo enum because mojom doesn't appear to have a platform
+  // dependent preprocessor yet.)
+  //
+  // TODO(erg): Remove this, and declare Win32 keycodes correct by fiat. We can
+  // not do this until we remove ui::Event usage from within mojo.
   int32 key_code;
+
   bool is_char;
+
+  // The Win32 key code. Because of the web, this is the closest thing that we
+  // have to a cross platform key state.
+  KeyboardCode windows_key_code;
+
+  // The platform specific key code.
+  //
+  // TODO(erg): This exists only for NPAPI support, pepper USB keyboard support
+  // and IME on android support. Theoretically, we should be able to remove this
+  // in the medium to long term.
+  int32 native_key_code;
+
+  // The text generated by this keystroke. Corresponds to
+  // blink::WebKeyboardEvent::text.
+  uint16 text;
+
+  // Like |text|, but unmodified by concurrently held modifier keys (except
+  // shift). Corresponds to blink::WebKeyboardEvent::unmodifiedText.
+  uint16 unmodified_text;
 };
 
 struct TouchData {
   int32 pointer_id;
 };
 
 struct MouseWheelData {
   int32 x_offset;
   int32 y_offset;
 };
 
 struct Event {
   EventType action;
   EventFlags flags;
   int64 time_stamp;
   LocationData? location_data;
   KeyData? key_data;
   TouchData? touch_data;
   MouseWheelData? wheel_data;
 };
 
 }