Enable keyboard shortcuts and some menu commands for browserless Panels.

chrome/browser/ui/panels/panel_host.h

Index: chrome/browser/ui/panels/panel_host.h
diff --git a/chrome/browser/ui/panels/panel_host.h b/chrome/browser/ui/panels/panel_host.h
index 4ed270b58bdbf51194f6f367a848262aeeb47013..52be8f1261e9aef6f34e391f9c71bcde4a92c4c0 100644
--- a/chrome/browser/ui/panels/panel_host.h
+++ b/chrome/browser/ui/panels/panel_host.h
@@ -11,6 +11,7 @@
 #include "chrome/browser/extensions/extension_function_dispatcher.h"
 #include "content/public/browser/web_contents_delegate.h"
 #include "content/public/browser/web_contents_observer.h"
+#include "content/public/common/page_zoom.h"
 
 class ExtensionWindowController;
 class FaviconTabHelper;
@@ -53,7 +54,12 @@ class PanelHost : public content::WebContentsDelegate,
                             const gfx::Rect& pos) OVERRIDE;
   virtual bool IsPopupOrPanel(
       const content::WebContents* source) const OVERRIDE;
+  virtual void ContentsZoomChange(bool zoom_in) OVERRIDE;
   virtual bool IsApplication() const OVERRIDE;
+  virtual bool HandleContextMenu(
+      const content::ContextMenuParams& params) OVERRIDE;
+  virtual void HandleKeyboardEvent(
+      const content::NativeWebKeyboardEvent& event) OVERRIDE;
   virtual void ResizeDueToAutoResize(content::WebContents* web_contents,
                                      const gfx::Size& new_size) OVERRIDE;
 
@@ -68,6 +74,12 @@ class PanelHost : public content::WebContentsDelegate,
       OVERRIDE;
   virtual content::WebContents* GetAssociatedWebContents() const OVERRIDE;
 
+  // Actions on web contents.
+  void Reload();
+  void ReloadIgnoringCache();
+  void StopLoading();
+  void Zoom(content::PageZoom zoom);
+
  private:
   // Helper to close panel via the message loop.
   void ClosePanel();