[androidbrasil-dev] erro: can-not-find-symbol-class-builder

Criei um projeto no Android Studio 1.0, Login Activity.

Fiz as seguintes mundanças: No Build.gradle

compileSdkVersion 21          buildToolsVersion "21.1.1"      dependencies {                                                        compile fileTree(include: ['*.jar'], dir: 'libs')                 compile 'com.android.support:appcompat-v7:21.0.2'                 compile 'com.google.android.gms:play-services:6.5.87'             compile 'com.google.android.gms:play-services-plus:6.5.+'         compile 'com.google.android.gms:play-services-identity:6.5.+'     compile files('libs/google-play-services.jar')                    compile files('libs/android-support-v4.jar')                      }                                                                   

Tenho uma classe chamado LoginActivity.java e outra PlusBaseActivity.java

O classe PlusBaseActivity.java, apresenta o seguinte erro:

can not find symbol class Builder

Parte do codigo que contém o erro:

protected void onCreate(Bundle savedInstanceState) {      super.onCreate(savedInstanceState);        // Initialize the PlusClient connection.      // Scopes indicate the information about the user your application will be able to access.      mPlusClient =              new PlusClient.Builder(this, this, this).                      setVisibleActivities("http://schemas.google.com/AddActivity", "http://schemas.google.com/CheckInActivity")                      .setScopes(Scopes.PLUS_LOGIN,                      Scopes.PLUS_ME).build();  }

Já pesquisei pela internet e ainda não encontrei a solução, alguma dica como resolver esse problema?