Add the page url to plugin crashes to aid debugging.

chrome/plugin/npobject_util.h

 // Copyright (c) 2006-2008 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 //
 // Helper functions that are used by the NPObject proxy and stub.
 
 #ifndef CHROME_PLUGIN_NPOBJECT_UTIL_H__
 #define CHROME_PLUGIN_NPOBJECT_UTIL_H__
 
 #include "build/build_config.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #endif
 
 #include "chrome/plugin/npobject_stub.h"
 
-struct _NPVariant;
-typedef _NPVariant NPVariant;
+class GURL;
 class NPObjectProxy;
 class PluginChannelBase;
+
+struct _NPVariant;
 struct NPIdentifier_Param;
 struct NPVariant_Param;
+
+typedef _NPVariant NPVariant;
 typedef void *NPIdentifier;
 
 namespace base {
 class WaitableEvent;
 }
 
 // Needs to be called early in the plugin process lifetime, before any
 // plugin instances are initialized.
 void PatchNPNFunctions();
 
 // Returns true if the current process is a plugin process, or false if it's a
 // renderer process.
 bool IsPluginProcess();
 
 // Creates an object similar to NPIdentifier that can be marshalled.
 void CreateNPIdentifierParam(NPIdentifier id, NPIdentifier_Param* param);
 
 // Creates an NPIdentifier from the marshalled object.
 NPIdentifier CreateNPIdentifier(const  NPIdentifier_Param& param);
 
 // Creates an object similar to NPVariant that can be marshalled.
 // If the containing NPObject happens to be an NPObject, then a stub
 // is created around it and param holds the routing id for it.
 // If release is true, the NPVariant object is released (except if
 // it contains an NPObject, since the stub will manage its lifetime).
 void CreateNPVariantParam(const NPVariant& variant,
                           PluginChannelBase* channel,
                           NPVariant_Param* param,
                           bool release,
-                          base::WaitableEvent* modal_dialog_event);
+                          base::WaitableEvent* modal_dialog_event,
+                          const GURL& page_url);
 
 // Creates an NPVariant from the marshalled object.
 void CreateNPVariant(const NPVariant_Param& param,
                      PluginChannelBase* channel,
                      NPVariant* result,
-                     base::WaitableEvent* modal_dialog_event);
+                     base::WaitableEvent* modal_dialog_event,
+                     const GURL& page_url);
 
 #if defined(OS_WIN)
 // Given a plugin's HWND, returns an event associated with the TabContents
 // that's set when inside a messagebox.  This tells the plugin process that
 // the message queue should be pumped (as what would happen if everything was
 // in-process).  This avoids deadlocks when a plugin invokes javascript that
 // causes a message box to come up.
 HANDLE GetMessageBoxEvent(HWND hwnd);
 #endif  // defined(OS_WIN)
 
 #endif  // CHROME_PLUGIN_NPOBJECT_UTIL_H__