Rewrite the Android implementation of BatteryMonitor directly in Java.

content/browser/mojo/service_registry_android.h

Index: content/browser/mojo/service_registry_android.h
diff --git a/content/browser/mojo/service_registry_android.h b/content/browser/mojo/service_registry_android.h
index 0873531be25ad3dc0b9db5633d6a2433c638d496..37ec10a4be81f7631226a134cd9dfeebca4c6e7a 100644
--- a/content/browser/mojo/service_registry_android.h
+++ b/content/browser/mojo/service_registry_android.h
@@ -37,9 +37,7 @@ class CONTENT_EXPORT ServiceRegistryAndroid {
                               jstring j_name,
                               jint handle);
 
-  const base::android::ScopedJavaGlobalRef<jobject>& GetObjForTesting() {
-    return obj_;
-  }
+  const base::android::ScopedJavaGlobalRef<jobject>& GetObj() { return obj_; }
 
  private:
   ServiceRegistryImpl* service_registry_;