Give WebTouchEvent and WebKeyboardEvent their own headers

ui/events/blink/web_input_event_traits_unittest.cc

 // 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.
 
 #include "ui/events/blink/web_input_event_traits.h"
 
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/WebKit/public/platform/WebGestureEvent.h"
 #include "third_party/WebKit/public/platform/WebInputEvent.h"
+#include "third_party/WebKit/public/platform/WebKeyboardEvent.h"
 #include "third_party/WebKit/public/platform/WebMouseWheelEvent.h"
+#include "third_party/WebKit/public/platform/WebTouchEvent.h"
 
 using blink::WebGestureEvent;
 using blink::WebInputEvent;
 using blink::WebKeyboardEvent;
 using blink::WebMouseEvent;
 using blink::WebMouseWheelEvent;
 using blink::WebTouchEvent;
 
 namespace ui {
 namespace {
@@ skipping 23 matching lines @@
   EXPECT_FALSE(WebInputEventTraits::ToString(gesture).empty());
 
   WebTouchEvent touch(WebInputEvent::TouchStart, WebInputEvent::NoModifiers,
                       WebInputEvent::TimeStampForTesting);
   touch.touchesLength = 1;
   EXPECT_FALSE(WebInputEventTraits::ToString(touch).empty());
 }
 
 }  // namespace
 }  // namespace ui