Tracking push events for lucid sleep

extensions/browser/extension_host_observer.h

+// Copyright 2015 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 EXTENSIONS_BROWSER_EXTENSION_HOST_OBSERVER_H_
+#define EXTENSIONS_BROWSER_EXTENSION_HOST_OBSERVER_H_
+
+#include <string>
+
+namespace extensions {
+class ExtensionHost;
+
+class ExtensionHostObserver {
+ public:
+  virtual ~ExtensionHostObserver() {}
+
+  // Called when an ExtensionHost is destroyed.
+  virtual void OnExtensionHostDestroyed(const ExtensionHost* host) {}
+
+  // Called when a message has been disptached to the RenderView corresponding
+  // to |host|.
+  virtual void OnExtensionMessageDispatched(const ExtensionHost* host,
+                                            const std::string& event_name,
+                                            int message_id) {}
+
+  // Called when a previously dispatched message has been acked by the
+  // RenderView for |host|.
+  virtual void OnExtensionMessageAcked(const ExtensionHost* host,
+                                       int message_id) {}
+
+  // Called when the extension associated with |host| starts a new network
+  // request.
+  virtual void OnNetworkRequestStarted(const ExtensionHost* host,
+                                       uint64 request_id) {}
+
+  // Called when the network request with |request_id| is done.
+  virtual void OnNetworkRequestDone(const ExtensionHost* host,
+                                    uint64 request_id) {}
+};
+
+}  // namespace extensions
+
+#endif /* EXTENSIONS_BROWSER_EXTENSION_HOST_OBSERVER_H_ */