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

content/public/browser/web_contents_delegate.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_
 #define CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_
 
 #include <stdint.h>
 
 #include <set>
@@ skipping 61 matching lines @@
 
 namespace blink {
 class WebGestureEvent;
 }
 
 namespace content {
 
 struct OpenURLParams;
 struct WebContentsUnresponsiveState;
 
+enum class KeyboardEventProcessingResult;
+
 // Objects implement this interface to get notified about changes in the
 // WebContents and to provide necessary functionality.
 class CONTENT_EXPORT WebContentsDelegate {
  public:
   WebContentsDelegate();
 
   // Opens a new URL inside the passed in WebContents (if source is 0 open
   // in the current front-most tab), unless |disposition| indicates the url
   // should be opened in a new tab or window.
   //
@@ skipping 160 matching lines @@
   // Opens source view for given WebContents that is navigated to the given
   // page url.
   virtual void ViewSourceForTab(WebContents* source, const GURL& page_url);
 
   // Opens source view for the given subframe.
   virtual void ViewSourceForFrame(WebContents* source,
                                   const GURL& url,
                                   const PageState& page_state);
 
   // Allows delegates to handle keyboard events before sending to the renderer.
-  // Returns true if the |event| was handled. Otherwise, if the |event| would be
-  // handled in HandleKeyboardEvent() method as a normal keyboard shortcut,
-  // |*is_keyboard_shortcut| should be set to true.
-  virtual bool PreHandleKeyboardEvent(WebContents* source,
-                                      const NativeWebKeyboardEvent& event,
-                                      bool* is_keyboard_shortcut);
+  // See enum for description of return values.
+  virtual KeyboardEventProcessingResult PreHandleKeyboardEvent(
+      WebContents* source,
+      const NativeWebKeyboardEvent& event);
 
   // Allows delegates to handle unhandled keyboard messages coming back from
   // the renderer.
   virtual void HandleKeyboardEvent(WebContents* source,
                                    const NativeWebKeyboardEvent& event) {}
 
   // Allows delegates to handle gesture events before sending to the renderer.
   // Returns true if the |event| was handled and thus shouldn't be processed
   // by the renderer's event handler. Note that the touch events that create
   // the gesture are always passed to the renderer since the gesture is created
@@ skipping 303 matching lines @@
   // Called when |this| is no longer the WebContentsDelegate for |source|.
   void Detach(WebContents* source);
 
   // The WebContents that this is currently a delegate for.
   std::set<WebContents*> attached_contents_;
 };
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_BROWSER_WEB_CONTENTS_DELEGATE_H_