add suggested changes from flutter roll (#10176)

shell/platform/android/io/flutter/embedding/android/DrawableSplashScreen.java

@@ -12,7 +12,6 @@ import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
 import android.util.AttributeSet;
 import android.view.View;
-import android.widget.FrameLayout;
 import android.widget.ImageView;
 
 /**

shell/platform/android/io/flutter/embedding/android/FlutterActivity.java

@@ -490,6 +490,7 @@ public class FlutterActivity extends FragmentActivity
   protected void onNewIntent(@NonNull Intent intent) {
     // Forward Intents to our FlutterFragment in case it cares.
     flutterFragment.onNewIntent(intent);
+    super.onNewIntent(intent);
   }
 
   @Override

shell/platform/android/io/flutter/embedding/android/FlutterFragment.java

@@ -10,7 +10,6 @@ import android.app.Activity;
 import android.arch.lifecycle.Lifecycle;
 import android.content.Context;
 import android.content.Intent;
-import android.graphics.Color;
 import android.os.Build;
 import android.os.Bundle;
 import android.os.Handler;