Collapse the API surface on WebInputEvent via accessor functions.

chrome/browser/page_load_metrics/metrics_web_contents_observer.cc

 // 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.
 
 #include "chrome/browser/page_load_metrics/metrics_web_contents_observer.h"
 
 #include <algorithm>
 #include <ostream>
 #include <string>
 #include <utility>
@@ skipping 282 matching lines @@
 }
 
 void MetricsWebContentsObserver::NavigationStopped() {
   // TODO(csharrison): Use a more user-initiated signal for STOP.
   NotifyAbortAllLoads(ABORT_STOP, UserInitiatedInfo::NotUserInitiated());
 }
 
 void MetricsWebContentsObserver::OnInputEvent(
     const blink::WebInputEvent& event) {
   // Ignore browser navigation or reload which comes with type Undefined.
-  if (event.type == blink::WebInputEvent::Type::Undefined)
+  if (event.type() == blink::WebInputEvent::Type::Undefined)
     return;
 
   if (committed_load_)
     committed_load_->OnInputEvent(event);
 }
 
 void MetricsWebContentsObserver::FlushMetricsOnAppEnterBackground() {
   // Signal to observers that we've been backgrounded, in cases where the
   // FlushMetricsOnAppEnterBackground callback gets invoked before the
   // associated WasHidden callback.
@@ skipping 159 matching lines @@
     content::NavigationHandle* navigation_handle) const {
   DCHECK(navigation_handle->IsInMainFrame());
   DCHECK(!navigation_handle->HasCommitted() ||
          !navigation_handle->IsSamePage());
 
   return BrowserPageTrackDecider(embedder_interface_.get(), web_contents(),
                                  navigation_handle).ShouldTrack();
 }
 
 }  // namespace page_load_metrics