Enable keyboard shortcuts and some menu commands for browserless Panels.

chrome/browser/ui/panels/panel.h

Index: chrome/browser/ui/panels/panel.h
diff --git a/chrome/browser/ui/panels/panel.h b/chrome/browser/ui/panels/panel.h
index d8709076aa1b9eae57103c3ab55c69705eefba54..c77e66a374f1437806370de12394bbf9f9b5b880 100644
--- a/chrome/browser/ui/panels/panel.h
+++ b/chrome/browser/ui/panels/panel.h
@@ -32,6 +32,7 @@ class SkBitmap;
 
 namespace content {
 class WebContents;
+struct NativeWebKeyboardEvent;
 }
 
 // A platform independent implementation of BaseWindow for Panels.
@@ -245,6 +246,12 @@ class Panel : public BaseWindow,
   // user-resizable, it should not be a problem.
   void IncreaseMaxSize(const gfx::Size& desired_panel_size);
 
+  // Changes the zoom level of the contents.
+  void ContentsZoomChange(bool zoom_in);
+
+  // Handles keyboard events coming back from the renderer.
+  void HandleKeyboardEvent(const content::NativeWebKeyboardEvent& event);
+
   // Whether the panel window is always on top.
   void SetAlwaysOnTop(bool on_top);
   bool always_on_top() const { return always_on_top_; }