This adds some plumbing for propagating the reason for a renderer's death

chrome/common/render_messages_internal.h

 // Copyright (c) 2010 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.
 
 #include <map>
 #include <string>
 #include <vector>
 
 #include "build/build_config.h"
 
@@ skipping 1175 matching lines @@
 // to run in a modal fashion until it is closed.
 IPC_SYNC_MESSAGE_ROUTED0_0(ViewHostMsg_RunModal)
 
 IPC_MESSAGE_CONTROL1(ViewHostMsg_UpdatedCacheStats,
                      WebKit::WebCache::UsageStats /* stats */)
 
 // Indicates the renderer is ready in response to a ViewMsg_New or
 // a ViewMsg_CreatingNew_ACK.
 IPC_MESSAGE_ROUTED0(ViewHostMsg_RenderViewReady)
 
+
 // Indicates the renderer process is gone.  This actually is sent by the
 // browser process to itself, but keeps the interface cleaner.
-IPC_MESSAGE_ROUTED0(ViewHostMsg_RenderViewGone)
+IPC_MESSAGE_ROUTED2(ViewHostMsg_RenderViewGone,
+                    int, /* this really is base::TerminationStatus */
+                    int /* exit_code */)
 
 // Sent by the renderer process to request that the browser close the view.
 // This corresponds to the window.close() API, and the browser may ignore
 // this message.  Otherwise, the browser will generates a ViewMsg_Close
 // message to close the view.
 IPC_MESSAGE_ROUTED0(ViewHostMsg_Close)
 
 // Sent by the renderer process to request that the browser move the view.
 // This corresponds to the window.resizeTo() and window.moveTo() APIs, and
 // the browser may ignore this message.
@@ skipping 1863 matching lines @@
 IPC_SYNC_MESSAGE_CONTROL1_2(ViewHostMsg_PepperQueryFile,
                             FilePath /* path */,
                             base::PlatformFileInfo, /* info */
                             base::PlatformFileError /* error_code */)
 
 // Get the directory's contents.
 IPC_SYNC_MESSAGE_CONTROL1_2(ViewHostMsg_PepperGetDirContents,
                             FilePath /* path */,
                             PepperDirContents, /* contents */
                             base::PlatformFileError /* error_code */)