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

chrome/test/base/test_browser_window.h

Index: chrome/test/base/test_browser_window.h
diff --git a/chrome/test/base/test_browser_window.h b/chrome/test/base/test_browser_window.h
index cafea203b4ec4c04501d369ff13d880ab9fdba91..c67130437d34064c78a362fae4faf498c4071690 100644
--- a/chrome/test/base/test_browser_window.h
+++ b/chrome/test/base/test_browser_window.h
@@ -80,11 +80,10 @@ class TestBrowserWindow : public BrowserWindow {
   void FocusInfobars() override {}
   void RotatePaneFocus(bool forwards) override {}
   void ShowAppMenu() override {}
-  bool PreHandleKeyboardEvent(const content::NativeWebKeyboardEvent& event,
-                              bool* is_keyboard_shortcut) override;
+  content::KeyboardEventProcessingResult PreHandleKeyboardEvent(
+      const content::NativeWebKeyboardEvent& event) override;
   void HandleKeyboardEvent(
       const content::NativeWebKeyboardEvent& event) override {}
-
   bool IsBookmarkBarVisible() const override;
   bool IsBookmarkBarAnimating() const override;
   bool IsTabStripEditable() const override;