Adds the ability for WebContentsDelegate to decide if event should be updated

content/public/browser/web_contents_delegate.cc

 // 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 "content/public/browser/web_contents_delegate.h"
 
 #include "base/compiler_specific.h"
 #include "base/logging.h"
 #include "base/memory/singleton.h"
 #include "build/build_config.h"
+#include "content/public/browser/keyboard_event_processing_result.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/security_style_explanations.h"
 #include "content/public/browser/web_contents.h"
 #include "content/public/common/bindings_policy.h"
 #include "content/public/common/url_constants.h"
 #include "net/cert/x509_certificate.h"
 #include "ui/gfx/geometry/rect.h"
 
 namespace content {
 
@@ skipping 83 matching lines @@
                                              const GURL& frame_url,
                                              const PageState& page_state) {
   // Same as ViewSourceForTab, but for given subframe.
   GURL url = GURL(kViewSourceScheme + std::string(":") + frame_url.spec());
   OpenURLFromTab(
       source,
       OpenURLParams(url, Referrer(), WindowOpenDisposition::NEW_FOREGROUND_TAB,
                     ui::PAGE_TRANSITION_LINK, false));
 }
 
-bool WebContentsDelegate::PreHandleKeyboardEvent(
+KeyboardEventProcessingResult WebContentsDelegate::PreHandleKeyboardEvent(
     WebContents* source,
-    const NativeWebKeyboardEvent& event,
-    bool* is_keyboard_shortcut) {
-  return false;
+    const NativeWebKeyboardEvent& event) {
+  return KeyboardEventProcessingResult::NOT_HANDLED;
 }
 
 bool WebContentsDelegate::PreHandleGestureEvent(
     WebContents* source,
     const blink::WebGestureEvent& event) {
   return false;
 }
 
 bool WebContentsDelegate::CanDragEnter(
     WebContents* source,
@@ skipping 151 matching lines @@
 
 bool WebContentsDelegate::ShouldAllowRunningInsecureContent(
     WebContents* web_contents,
     bool allowed_per_prefs,
     const url::Origin& origin,
     const GURL& resource_url) {
   return allowed_per_prefs;
 }
 
 }  // namespace content