Move SystemIndicator parsing out of Extension class

chrome/browser/extensions/api/system_indicator/system_indicator_api.h

Index: chrome/browser/extensions/api/system_indicator/system_indicator_api.h
diff --git a/chrome/browser/extensions/api/system_indicator/system_indicator_api.h b/chrome/browser/extensions/api/system_indicator/system_indicator_api.h
index 10981f6375a40872cec70187d975b2de3e06265a..a890793bb06fce1bca5bc706812b62825df194b4 100644
--- a/chrome/browser/extensions/api/system_indicator/system_indicator_api.h
+++ b/chrome/browser/extensions/api/system_indicator/system_indicator_api.h
@@ -6,10 +6,33 @@
 #define CHROME_BROWSER_EXTENSIONS_API_SYSTEM_INDICATOR_SYSTEM_INDICATOR_API_H_
 
 #include "chrome/browser/extensions/api/extension_action/extension_action_api.h"
+#include "chrome/browser/extensions/api/profile_keyed_api_factory.h"
 #include "chrome/browser/extensions/extension_function.h"
 
+class Profile;
+
 namespace extensions {
 
+class SystemIndicatorAPI : public ProfileKeyedAPI {
+ public:
+  explicit SystemIndicatorAPI(Profile* profile);
+  virtual ~SystemIndicatorAPI();
+
+  // ProfileKeyedAPI implementation.
+  static ProfileKeyedAPIFactory<SystemIndicatorAPI>* GetFactoryInstance();
+
+ private:
+  friend class ProfileKeyedAPIFactory<SystemIndicatorAPI>;
+
+  // ProfileKeyedAPI implementation.
+  static const char* service_name() {
+    return "SystemIndicatorAPI";
+  }
+  static const bool kServiceIsNULLWhileTesting = true;
+
+  DISALLOW_COPY_AND_ASSIGN(SystemIndicatorAPI);
+};
+
 class SystemIndicatorSetIconFunction : public ExtensionActionSetIconFunction {
  public:
   DECLARE_EXTENSION_FUNCTION("systemIndicator.setIcon", SYSTEMINDICATOR_SETICON)