Collect more data to send in crash reports for a crasher that's stumping me.

content/browser/plugin_process_host.cc

 // Copyright (c) 2012 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 "content/browser/plugin_process_host.h"
 
 #if defined(OS_WIN)
 #include <windows.h>
 #elif defined(OS_POSIX)
 #include <utility>  // for pair<>
 #endif
 
 #include <vector>
 
 #include "base/base_switches.h"
 #include "base/bind.h"
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/logging.h"
 #include "base/metrics/histogram.h"
 #include "base/path_service.h"
+#include "base/strings/string_number_conversions.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "content/browser/browser_child_process_host_impl.h"
 #include "content/browser/loader/resource_message_filter.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/plugin_service_impl.h"
 #include "content/common/child_process_host_impl.h"
 #include "content/common/plugin_process_messages.h"
 #include "content/common/resource_messages.h"
 #include "content/public/browser/browser_thread.h"
@@ skipping 377 matching lines @@
 
   if (client) {
     resource_context_map_[client->ID()] = client->GetResourceContext();
     client->OnChannelOpened(channel_handle);
   }
   sent_requests_.pop_front();
 }
 
 void PluginProcessHost::OnChannelDestroyed(int renderer_id) {
   resource_context_map_.erase(renderer_id);
+  removed_pids_.insert(renderer_id);
 }
 
 void PluginProcessHost::GetContexts(const ResourceHostMsg_Request& request,
                                     ResourceContext** resource_context,
                                     net::URLRequestContext** request_context) {
   *resource_context = resource_context_map_[request.origin_pid];
+  if (!*resource_context) {
+    std::string url = request.first_party_for_cookies.spec();
+    // Debugging http://crbug.com/302530
+    url += std::string("_") + base::IntToString(request.origin_pid);
+
+    for (std::map<int, ResourceContext*>::iterator i =
+            resource_context_map_.begin();
+         i != resource_context_map_.end(); ++i) {
+      url += std::string("_") + base::IntToString(i->first);
+    }
+
+    url += "_";
+    for (std::set<int>::iterator i = removed_pids_.begin();
+          i != removed_pids_.end(); ++i) {

[brettw, 2013/10/02 04:01:32]

Undent 1 space :)

+      url += std::string("_") + base::IntToString(*i);
+    }
+    GetContentClient()->SetActiveURL(GURL(url));
+  }
   *request_context = (*resource_context)->GetRequestContext();
 }
 
 }  // namespace content