feedback: List extensions using the chrome.power API.

extensions/browser/api/power/power_api.h

Index: extensions/browser/api/power/power_api.h
diff --git a/extensions/browser/api/power/power_api.h b/extensions/browser/api/power/power_api.h
index db79acaa8a20c17a1d2a9120f05cac5ce3ee5df8..2a19027ac0626cdf0616c35758c3d66fcaa1dc75 100644
--- a/extensions/browser/api/power/power_api.h
+++ b/extensions/browser/api/power/power_api.h
@@ -66,6 +66,13 @@ class PowerAPI : public BrowserContextKeyedAPI,
   // BrowserContextKeyedAPI implementation.
   static BrowserContextKeyedAPIFactory<PowerAPI>* GetFactoryInstance();
 
+  // Map from extension ID to the corresponding level for each extension
+  // that has an outstanding request.
+  using ExtensionLevelMap = std::map<std::string, api::power::Level>;
+  const ExtensionLevelMap& extension_levels() const {
+    return extension_levels_;
+  }
+
   // Adds an extension lock at |level| for |extension_id|, replacing the
   // extension's existing lock, if any.
   void AddRequest(const std::string& extension_id, api::power::Level level);
@@ -113,9 +120,7 @@ class PowerAPI : public BrowserContextKeyedAPI,
   // |power_save_blocker_| is NULL.
   api::power::Level current_level_;
 
-  // Map from extension ID to the corresponding level for each extension
-  // that has an outstanding request.
-  typedef std::map<std::string, api::power::Level> ExtensionLevelMap;
+  // Outstanding requests.
   ExtensionLevelMap extension_levels_;
 
   DISALLOW_COPY_AND_ASSIGN(PowerAPI);