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

chrome/browser/ui/browser.h

Index: chrome/browser/ui/browser.h
diff --git a/chrome/browser/ui/browser.h b/chrome/browser/ui/browser.h
index fb69d14477434bf68913f27a2c95a4cb2c4734c7..1b09ffb3274715adb3f8c6278d965e02b8c44eb3 100644
--- a/chrome/browser/ui/browser.h
+++ b/chrome/browser/ui/browser.h
@@ -478,9 +478,9 @@ class Browser : public TabStripModelObserver,
   bool CanOverscrollContent() const override;
   bool ShouldPreserveAbortedURLs(content::WebContents* source) override;
   void SetFocusToLocationBar(bool select_all) override;
-  bool PreHandleKeyboardEvent(content::WebContents* source,
-                              const content::NativeWebKeyboardEvent& event,
-                              bool* is_keyboard_shortcut) override;
+  content::KeyboardEventProcessingResult PreHandleKeyboardEvent(
+      content::WebContents* source,
+      const content::NativeWebKeyboardEvent& event) override;
   void HandleKeyboardEvent(
       content::WebContents* source,
       const content::NativeWebKeyboardEvent& event) override;