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

content/browser/web_contents/web_contents_impl.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/browser/web_contents/web_contents_impl.h"
 
 #include <stddef.h>
 
 #include <cmath>
 #include <utility>
@@ skipping 82 matching lines @@
 #include "content/public/browser/ax_event_notification_details.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_plugin_guest_manager.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/browser/download_manager.h"
 #include "content/public/browser/download_url_parameters.h"
 #include "content/public/browser/focused_node_details.h"
 #include "content/public/browser/guest_mode.h"
 #include "content/public/browser/invalidate_type.h"
 #include "content/public/browser/javascript_dialog_manager.h"
+#include "content/public/browser/keyboard_event_processing_result.h"
 #include "content/public/browser/load_notification_details.h"
 #include "content/public/browser/navigation_details.h"
 #include "content/public/browser/notification_details.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/browser/notification_types.h"
 #include "content/public/browser/render_widget_host_iterator.h"
 #include "content/public/browser/resource_request_details.h"
 #include "content/public/browser/security_style_explanations.h"
 #include "content/public/browser/ssl_status.h"
 #include "content/public/browser/storage_partition.h"
@@ skipping 1648 matching lines @@
 
   for (auto& observer : observers_)
     observer.MainFrameWasResized(width_changed);
 }
 
 void WebContentsImpl::ScreenInfoChanged() {
   if (browser_plugin_embedder_)
     browser_plugin_embedder_->ScreenInfoChanged();
 }
 
-bool WebContentsImpl::PreHandleKeyboardEvent(
-    const NativeWebKeyboardEvent& event,
-    bool* is_keyboard_shortcut) {
-  return delegate_ &&
-      delegate_->PreHandleKeyboardEvent(this, event, is_keyboard_shortcut);
+KeyboardEventProcessingResult WebContentsImpl::PreHandleKeyboardEvent(
+    const NativeWebKeyboardEvent& event) {
+  return delegate_ ? delegate_->PreHandleKeyboardEvent(this, event)
+                   : KeyboardEventProcessingResult::NOT_HANDLED;
 }
 
 void WebContentsImpl::HandleKeyboardEvent(const NativeWebKeyboardEvent& event) {
   if (browser_plugin_embedder_ &&
       browser_plugin_embedder_->HandleKeyboardEvent(event)) {
     return;
   }
   if (delegate_)
     delegate_->HandleKeyboardEvent(this, event);
 }
@@ skipping 3607 matching lines @@
     RenderViewHost* render_view_host = RenderViewHost::From(render_widget_host);
     if (!render_view_host)
       continue;
     render_view_host_set.insert(render_view_host);
   }
   for (RenderViewHost* render_view_host : render_view_host_set)
     render_view_host->OnWebkitPreferencesChanged();
 }
 
 }  // namespace content