Allow keyboard shortcuts can be captured by webpage when toolbar is not visible

chrome/browser/ui/cocoa/browser_window_cocoa.mm

Index: chrome/browser/ui/cocoa/browser_window_cocoa.mm
diff --git a/chrome/browser/ui/cocoa/browser_window_cocoa.mm b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
index 2991e80ab6535094deb95aa54984a6c72c13f3b9..78220a5d7fb93e37ed1e225a0f3d7bc0dd79eb15 100644
--- a/chrome/browser/ui/cocoa/browser_window_cocoa.mm
+++ b/chrome/browser/ui/cocoa/browser_window_cocoa.mm
@@ -322,6 +322,16 @@ NSString* BrowserWindowCocoa::WindowTitle() {
       browser_->GetWindowTitleForCurrentTab(include_app_name));
 }
 
+bool BrowserWindowCocoa::IsToolbarShowing() const {
+  if (!IsFullscreen())
+    return true;
+
+  // TODO(zijiehe): Retrieve the visibility of toolbar from
+  // FullscreenToolbarController. See http://crbug.com/702251 and
+  // http://crbug.com/680809.
+  return true;
+}
+
 void BrowserWindowCocoa::BookmarkBarStateChanged(
     BookmarkBar::AnimateChangeType change_type) {
   [[controller_ bookmarkBarController]