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

content/browser/web_contents/web_contents_impl.cc

Index: content/browser/web_contents/web_contents_impl.cc
diff --git a/content/browser/web_contents/web_contents_impl.cc b/content/browser/web_contents/web_contents_impl.cc
index b1653692c42112e5fb0c051641545d6f62903c23..578d52f18aa6758915400ae8450a490b64c3b43a 100644
--- a/content/browser/web_contents/web_contents_impl.cc
+++ b/content/browser/web_contents/web_contents_impl.cc
@@ -100,6 +100,7 @@
 #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"
@@ -1768,11 +1769,10 @@ void WebContentsImpl::ScreenInfoChanged() {
     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) {