Using API key specified from js

chrome/browser/extensions/api/copresence/copresence_api.h

 // Copyright 2014 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_BROWSER_EXTENSIONS_API_COPRESENCE_COPRESENCE_API_H_
 #define CHROME_BROWSER_EXTENSIONS_API_COPRESENCE_COPRESENCE_API_H_
 
 #include <map>
 #include <string>
 #include <vector>
@@ skipping 37 matching lines @@
 
  private:
   friend class BrowserContextKeyedAPIFactory<CopresenceService>;
 
   // CopresenceClientDelegate overrides:
   virtual void HandleMessages(
       const std::string& app_id,
       const std::string& subscription_id,
       const std::vector<copresence::Message>& message) OVERRIDE;
   virtual net::URLRequestContextGetter* GetRequestContext() const OVERRIDE;
-  virtual const std::string GetPlatformVersionString() const OVERRIDE;
+  virtual const copresence::DeviceFingerprint& GetDeviceFingerprint() const
+      OVERRIDE;
+  virtual const std::string& GetAPIKey() const OVERRIDE;
   virtual copresence::WhispernetClient* GetWhispernetClient() OVERRIDE;
 
   // BrowserContextKeyedAPI implementation.
   static const char* service_name() { return "CopresenceService"; }
 
   bool is_shutting_down_;
   std::map<std::string, std::string> apps_by_subscription_id_;
 
   content::BrowserContext* const browser_context_;
+  copresence::DeviceFingerprint device_fingerprint_;
+  std::string api_key_;
+
   scoped_ptr<copresence::CopresenceClient> client_;
   scoped_ptr<copresence::WhispernetClient> whispernet_client_;
 
   DISALLOW_COPY_AND_ASSIGN(CopresenceService);
 };
 
 template <>
 void BrowserContextKeyedAPIFactory<
     CopresenceService>::DeclareFactoryDependencies();
 
@@ skipping 14 matching lines @@
   DECLARE_EXTENSION_FUNCTION("copresence.setApiKey", COPRESENCE_SETAPIKEY);
 
  protected:
   virtual ~CopresenceSetApiKeyFunction() {}
   virtual ExtensionFunction::ResponseAction Run() OVERRIDE;
 };
 
 }  // namespace extensions
 
 #endif  // CHROME_BROWSER_EXTENSIONS_API_COPRESENCE_COPRESENCE_API_H_