Change mojo enums to be scoped enums in the generated C++ bindings.

components/mus/public/interfaces/input_event_matcher.mojom

 // Copyright 2015 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.
 
 module mus.mojom;
 
 import "components/mus/public/interfaces/input_event_constants.mojom";
 import "components/mus/public/interfaces/input_key_codes.mojom";
 import "ui/mojo/geometry/geometry.mojom";
 
 struct KeyEventMatcher {
   KeyboardCode keyboard_code;
 };
 
 struct PointerKindMatcher {
   PointerKind pointer_kind;
 };
 
 struct PointerLocationMatcher {
   mojo.RectF region;
 };
 
 struct EventTypeMatcher {
   EventType type;
 };
 
 struct EventFlagsMatcher {
-  EventFlags flags;
+  int32 flags;

[yzshen1, 2016/01/07 19:24:52]

Please add comments about what flags is. Previously the type EventFlags at least
give hints about where to look for more info.

[Sam McNally, 2016/01/08 05:12:51]

Done.

 };
 
 // If a specific matcher is missing, then an Event will match this EventMatcher
 // (if relevant). For example, if |type_matcher| is missing, then events of all
 // types will match this EventMatcher. Similarly, if |key_matcher| is missing,
 // then all key-events will match.
 // An example matcher to match the Ctrl+A accelerator would be:
 // - |type_matcher.type| = mojo::EVENT_TYPE_KEY_PRESSED
 // - |flags_matcher.flags| = mojo::EVENT_FLAGS_CONTROL_DOWN
 // - |key_matcher.keyboard_code| = mojo::KEYBOARD_CODE_A
 //
 // A matcher to match any key-press event would be:
 // - |type_matcher.type| = mojo::EVENT_TYPE_KEY_PRESSED
 struct EventMatcher {
   EventTypeMatcher? type_matcher;
   EventFlagsMatcher? flags_matcher;
   // These flags will be stripped from incoming events' flags when comparing
   // against |flags_matcher|.
   EventFlagsMatcher? ignore_flags_matcher;
   KeyEventMatcher? key_matcher;
   PointerKindMatcher? pointer_kind_matcher;
   PointerLocationMatcher? pointer_location_matcher;
 };