Add a new macrobench to test layer resize

Create a new HWUI macrobench to test hardware layer resize code path.

Test: Executed the new test on bullhead device with "adb shell
/data/benchmarktest64/hwuimacro hwlayersize --onscreen --wait-for-gpu -c
1000".

Change-Id: I9ed411d76ac3d51339a69add8ab1843c3256994a

libs/hwui/tests/common/scenes/HwLayerSizeAnimation.cpp

@@ -0,0 +1,48 @@
+/*
+ * Copyright (C) 2016 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 "TestSceneBase.h"
+
+class HwLayerSizeAnimation;
+
+static TestScene::Registrar _HwLayerSize(TestScene::Info{
+    "hwlayersize",
+    "A nested pair of nodes with LayerType::RenderLayer(hardware) set on the child and "
+    "LayerType::None on the parent. "
+    "Tests animating the size of a hardware layer.",
+    TestScene::simpleCreateScene<HwLayerSizeAnimation>
+});
+
+class HwLayerSizeAnimation : public TestScene {
+public:
+    sp<RenderNode> card;
+    void createContent(int width, int height, Canvas& canvas) override {
+        card = TestUtils::createNode(0, 0, 200, 200,
+                [](RenderProperties& props, Canvas& canvas) {
+            props.mutateLayerProperties().setType(LayerType::RenderLayer);
+            canvas.drawColor(0xFF0000FF, SkBlendMode::kSrcOver);
+        });
+        canvas.drawColor(0xFFFFFFFF, SkBlendMode::kSrcOver); // background
+        canvas.drawRenderNode(card.get());
+    }
+    void doFrame(int frameNr) override {
+        int curFrame = frameNr % 150;
+        //we animate left and top coordinates, which in turn animates width and
+        //height (bottom/right coordinates are fixed)
+        card->mutateStagingProperties().setLeftTop(curFrame, curFrame);
+        card->setPropertyFieldsDirty(RenderNode::X | RenderNode::Y);
+    }
+};