Change panels to be able to turn off autoresize.

content/renderer/render_widget.h

Index: content/renderer/render_widget.h
diff --git a/content/renderer/render_widget.h b/content/renderer/render_widget.h
index 6adf3e84921c64d284cfee3652f785f5ae198b3b..11e4bfadf564a96c0f8c003e3138f3a7783e7cad 100644
--- a/content/renderer/render_widget.h
+++ b/content/renderer/render_widget.h
@@ -158,6 +158,11 @@ class CONTENT_EXPORT RenderWidget
   // For unit tests.
   friend class RenderWidgetTest;
 
+  enum ResizeAck {
+    SEND_RESIZE_ACK,
+    NO_RESIZE_ACK,
+  };
+
   RenderWidget(WebKit::WebPopupType popup_type,
                const WebKit::WebScreenInfo& screen_info);
   virtual ~RenderWidget();
@@ -203,6 +208,12 @@ class CONTENT_EXPORT RenderWidget
   // mainly intended to be used in conjuction with WebView::SetIsTransparent().
   virtual void SetBackground(const SkBitmap& bitmap);
 
+  // Resizes the render widget.
+  void Resize(const gfx::Size& new_size,
+              const gfx::Rect& resizer_rect,
+              bool is_fullscreen,
+              ResizeAck resize_ack);
+
   // RenderWidget IPC message handlers
   void OnClose();
   void OnCreatingNewAck(gfx::NativeViewId parent);