Fix plugin hang that Earth team found....

chrome/plugin/webplugin_proxy.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.
 
 #ifndef CHROME_PLUGIN_PLUGIN_WEBPLUGIN_PROXY_H__
 #define CHROME_PLUGIN_PLUGIN_WEBPLUGIN_PROXY_H__
 
 #include "base/hash_tables.h"
 #include "base/ref_counted.h"
 #include "base/scoped_handle.h"
@@ skipping 79 matching lines @@
                       const base::SharedMemoryHandle& background_buffer);
 
   void CancelDocumentLoad();
 
   void InitiateHTTPRangeRequest(const char* url,
                                 const char* range_info,
                                 void* existing_stream,
                                 bool notify_needed,
                                 HANDLE notify_data);
 
+  base::WaitableEvent* modal_dialog_event() {
+    return modal_dialog_event_.get();
+  }
+
  private:
   bool Send(IPC::Message* msg);
 
   // Updates the shared memory section where windowless plugins paint.
   void SetWindowlessBuffer(const base::SharedMemoryHandle& windowless_buffer,
                            const base::SharedMemoryHandle& background_buffer);
 
   // Converts a shared memory section handle from the renderer process into a
   // bitmap and hdc that are mapped to this process.
   void ConvertBuffer(const base::SharedMemoryHandle& buffer,
@@ skipping 32 matching lines @@
 
   // These hold the bitmap of the background image.
   ScopedHandle background_shared_section_;
   ScopedBitmap background_bitmap_;
   ScopedHDC background_hdc_;
 
   ScopedRunnableMethodFactory<WebPluginProxy> runnable_method_factory_;
 };
 
 #endif  // CHROME_PLUGIN_PLUGIN_WEBPLUGIN_PROXY_H__