[HWUI] remove libui from HWUI's dependencies

Bug: 136263238
Test: builds
Test: interact with device
Change-Id: I18540f78a4ee5ffcc30c96ff7862480e1d8fe50a
diff --git a/libs/hwui/utils/NdkUtils.cpp b/libs/hwui/utils/NdkUtils.cpp
new file mode 100644
index 0000000..de6274e
--- /dev/null
+++ b/libs/hwui/utils/NdkUtils.cpp
@@ -0,0 +1,32 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <utils/NdkUtils.h>
+
+namespace android {
+namespace uirenderer {
+
+UniqueAHardwareBuffer allocateAHardwareBuffer(const AHardwareBuffer_Desc& desc) {
+    AHardwareBuffer* buffer;
+    if (AHardwareBuffer_allocate(&desc, &buffer) != 0) {
+        return nullptr;
+    } else {
+        return UniqueAHardwareBuffer{buffer};
+    }
+}
+
+}  // namespace uirenderer
+}  // namespace android