Browser Plugin: Renderer-side changes

content/renderer/browser_plugin/browser_plugin_registry.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/renderer/browser_plugin/browser_plugin_registry.h"
+
+#include "base/logging.h"
+
+namespace content {
+
+webkit::ppapi::PluginModule* BrowserPluginRegistry::GetModule(
+    int guest_process_id) {
+  NonOwningModuleMap::iterator it = modules_.find(guest_process_id);
+  if (it == modules_.end())
+    return NULL;
+  return it->second;
+}
+
+void BrowserPluginRegistry::AddModule(int guest_process_id,
+                                      webkit::ppapi::PluginModule* module) {
+  DCHECK(modules_.find(guest_process_id) == modules_.end());
+  modules_[guest_process_id] = module;
+}
+
+void BrowserPluginRegistry::PluginModuleDead(
+    webkit::ppapi::PluginModule* dead_module) {
+  // DANGER: Don't dereference the dead_module pointer! It may be in the
+  // process of being deleted.
+
+  // Modules aren't destroyed very often and there are normally at most a
+  // couple of them. So for now we just do a brute-force search.
+  for (NonOwningModuleMap::iterator i = modules_.begin();
+       i != modules_.end(); ++i) {
+    if (i->second == dead_module) {
+      modules_.erase(i);
+      return;
+    }
+  }
+  NOTREACHED();  // Should have always found the module above.
+}
+
+}  // namespace content