SurfaceAggregator should check whether output is secure when drawin

cc/test/layer_test_common.h

Index: cc/test/layer_test_common.h
diff --git a/cc/test/layer_test_common.h b/cc/test/layer_test_common.h
index 7c1a60085f2e0d27f7521c067de2fb28813e8d79..71ce50844582450febd0a5d5bd9ad1712bad2f92 100644
--- a/cc/test/layer_test_common.h
+++ b/cc/test/layer_test_common.h
@@ -139,10 +139,6 @@ class LayerTestCommon {
 
     void RequestCopyOfOutput();
 
-    void SetOutputIsSecure(bool output_is_secure) {
-      host_->host_impl()->set_output_is_secure(output_is_secure);
-    }
-
     OutputSurface* output_surface() const {
       return host_->host_impl()->output_surface();
     }