Collapse the API surface on WebInputEvent via accessor functions.

chrome/browser/ui/cocoa/extensions/extension_view_mac.mm

 // 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.
 
 #include "chrome/browser/ui/cocoa/extensions/extension_view_mac.h"
 
 #import <Cocoa/Cocoa.h>
 
 #include "base/mac/foundation_util.h"
 #include "base/memory/ptr_util.h"
@@ skipping 51 matching lines @@
     gfx::Size max_size(ExtensionViewMac::kMaxWidth,
                        ExtensionViewMac::kMaxHeight);
     render_view_host()->EnableAutoResize(min_size, max_size);
   }
 }
 
 void ExtensionViewMac::HandleKeyboardEvent(
     content::WebContents* source,
     const content::NativeWebKeyboardEvent& event) {
   if (event.skip_in_browser ||
-      event.type == content::NativeWebKeyboardEvent::Char ||
+      event.type() == content::NativeWebKeyboardEvent::Char ||
       extension_host_->extension_host_type() !=
           extensions::VIEW_TYPE_EXTENSION_POPUP)
     return;
 
   ChromeEventProcessingWindow* event_window =
       base::mac::ObjCCastStrict<ChromeEventProcessingWindow>(
           [GetNativeView() window]);
   [event_window redispatchKeyEvent:event.os_event];
 }
 
@@ skipping 18 matching lines @@
 namespace extensions {
 
 // static
 std::unique_ptr<ExtensionView> ExtensionViewHost::CreateExtensionView(
     ExtensionViewHost* host,
     Browser* browser) {
   return base::MakeUnique<ExtensionViewMac>(host, browser);
 }
 
 }  // namespace extensions