Remove useless GraphicBuffer() constructor

Test: compiled & run
Bug: 36869708


Change-Id: I83d80a1cde28671135b7716a434c503aeefcec46
diff --git a/libs/gui/tests/FillBuffer.cpp b/libs/gui/tests/FillBuffer.cpp
index 079962c..ccd674f 100644
--- a/libs/gui/tests/FillBuffer.cpp
+++ b/libs/gui/tests/FillBuffer.cpp
@@ -95,7 +95,7 @@
             &anb));
     ASSERT_TRUE(anb != NULL);
 
-    sp<GraphicBuffer> buf(new GraphicBuffer(anb, false));
+    sp<GraphicBuffer> buf(GraphicBuffer::from(anb));
 
     uint8_t* img = NULL;
     ASSERT_EQ(NO_ERROR, buf->lock(GRALLOC_USAGE_SW_WRITE_OFTEN,