Add a PPB_Find_Private function to set the tickmarks on the page.

ppapi/proxy/ppb_instance_proxy.h

Index: ppapi/proxy/ppb_instance_proxy.h
diff --git a/ppapi/proxy/ppb_instance_proxy.h b/ppapi/proxy/ppb_instance_proxy.h
index 2304ae6f6c14f48375a51b942c7c6bb16072d746..40bb3f1afc07c5169004d2b4828eac4e135f57e2 100644
--- a/ppapi/proxy/ppb_instance_proxy.h
+++ b/ppapi/proxy/ppb_instance_proxy.h
@@ -64,6 +64,9 @@ class PPB_Instance_Proxy : public InterfaceProxy,
                                           PP_Bool final_result) OVERRIDE;
   virtual void SelectedFindResultChanged(PP_Instance instance,
                                          int32_t index) OVERRIDE;
+  virtual void SetTickmarks(PP_Instance instance,
+                            const PP_Rect* tickmarks,
+                            uint32_t count) OVERRIDE;
   virtual PP_Bool IsFullscreen(PP_Instance instance) OVERRIDE;
   virtual PP_Bool SetFullscreen(PP_Instance instance,
                                 PP_Bool fullscreen) OVERRIDE;
@@ -179,6 +182,8 @@ class PPB_Instance_Proxy : public InterfaceProxy,
                                            PP_Bool final_result);
   void OnHostMsgSelectFindResultChanged(PP_Instance instance,
                                         int32_t index);
+  void OnHostMsgSetTickmarks(PP_Instance instance,
+                             const std::vector<PP_Rect>& tickmarks);
   void OnHostMsgSetFullscreen(PP_Instance instance,
                               PP_Bool fullscreen,
                               PP_Bool* result);