Add MultiDisplayList + memory leak fixes

MultiDisplayList can contain either a SkiaDisplayList
or a CanvasOpBuffer. However DisplayList itself
still points to the SkiaDisplayList-only wrapper
to avoid any std::variant or std::visit overhead
just yet.

Also fixes a memory leak in CanvasFrontend from an
uninitialized std::optional and a few minor leaks
in unit tests.

Test: build & hwui_unit passes

Change-Id: Ifa6b723b6456f5d3eeac1201e76f337250103d6f
diff --git a/libs/hwui/tests/unit/CanvasFrontendTests.cpp b/libs/hwui/tests/unit/CanvasFrontendTests.cpp
index 05b1179..4ddcf6f 100644
--- a/libs/hwui/tests/unit/CanvasFrontendTests.cpp
+++ b/libs/hwui/tests/unit/CanvasFrontendTests.cpp
@@ -124,12 +124,12 @@
 
 TEST(CanvasFrontend, drawOpTransform) {
     CanvasFrontend<CanvasOpBuffer> opCanvas(100, 100);
-    const auto& receiver = opCanvas.receiver();
+    const auto &receiver = opCanvas.receiver();
 
     auto makeDrawRect = [] {
         return CanvasOp<CanvasOpType::DrawRect>{
-            .rect = SkRect::MakeWH(50, 50),
-            .paint = SkPaint(SkColors::kBlack),
+                .rect = SkRect::MakeWH(50, 50),
+                .paint = SkPaint(SkColors::kBlack),
         };
     };
 
@@ -167,14 +167,14 @@
 
     {
         // First result should be identity
-        const auto& result = transforms[0];
+        const auto &result = transforms[0];
         EXPECT_EQ(SkMatrix::kIdentity_Mask, result.getType());
         EXPECT_EQ(SkMatrix::I(), result);
     }
 
     {
         // Should be translate 10, 10
-        const auto& result = transforms[1];
+        const auto &result = transforms[1];
         EXPECT_EQ(SkMatrix::kTranslate_Mask, result.getType());
         SkMatrix m;
         m.setTranslate(10, 10);
@@ -183,7 +183,7 @@
 
     {
         // Should be translate 10, 10 + scale 2, 4
-        const auto& result = transforms[2];
+        const auto &result = transforms[2];
         EXPECT_EQ(SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask, result.getType());
         SkMatrix m;
         m.setTranslate(10, 10);
@@ -193,7 +193,7 @@
 
     {
         // Should be translate 10, 10 + translate 20, 15
-        const auto& result = transforms[3];
+        const auto &result = transforms[3];
         EXPECT_EQ(SkMatrix::kTranslate_Mask, result.getType());
         SkMatrix m;
         m.setTranslate(30, 25);
@@ -202,9 +202,9 @@
 
     {
         // Should be translate 10, 10 + translate 20, 15 + rotate 90
-        const auto& result = transforms[4];
+        const auto &result = transforms[4];
         EXPECT_EQ(SkMatrix::kTranslate_Mask | SkMatrix::kAffine_Mask | SkMatrix::kScale_Mask,
-                result.getType());
+                  result.getType());
         SkMatrix m;
         m.setTranslate(30, 25);
         m.preRotate(90.f);
diff --git a/libs/hwui/tests/unit/CanvasOpTests.cpp b/libs/hwui/tests/unit/CanvasOpTests.cpp
index a09e742..3041982 100644
--- a/libs/hwui/tests/unit/CanvasOpTests.cpp
+++ b/libs/hwui/tests/unit/CanvasOpTests.cpp
@@ -149,7 +149,7 @@
     CanvasOpBuffer buffer;
     EXPECT_EQ(buffer.size(), 0);
     size_t numPts = 3;
-    auto pts = sk_ref_sp(
+    auto pts = sk_sp<Points>(
           new Points({
               {32, 16},
               {48, 48},
@@ -192,7 +192,7 @@
     CanvasOpBuffer buffer;
     EXPECT_EQ(buffer.size(), 0);
     size_t numPts = 3;
-    auto pts = sk_ref_sp(
+    auto pts = sk_sp<Points>(
         new Points({
                {32, 16},
                {48, 48},
diff --git a/libs/hwui/tests/unit/EglManagerTests.cpp b/libs/hwui/tests/unit/EglManagerTests.cpp
new file mode 100644
index 0000000..f7f2406
--- /dev/null
+++ b/libs/hwui/tests/unit/EglManagerTests.cpp
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2021 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 <gtest/gtest.h>
+
+#include "renderthread/EglManager.h"
+#include "tests/common/TestContext.h"
+
+using namespace android;
+using namespace android::uirenderer;
+using namespace android::uirenderer::renderthread;
+using namespace android::uirenderer::test;
+
+TEST(EglManager, doesSurfaceLeak) {
+    EglManager eglManager;
+    eglManager.initialize();
+
+    ASSERT_TRUE(eglManager.hasEglContext());
+
+    auto colorSpace = SkColorSpace::MakeSRGB();
+    for (int i = 0; i < 100; i++) {
+        TestContext context;
+        auto result =
+                eglManager.createSurface(context.surface().get(), ColorMode::Default, colorSpace);
+        EXPECT_TRUE(result);
+        EGLSurface surface = result.unwrap();
+        eglManager.destroySurface(surface);
+    }
+
+    eglManager.destroy();
+}
\ No newline at end of file
diff --git a/libs/hwui/tests/unit/SkiaPipelineTests.cpp b/libs/hwui/tests/unit/SkiaPipelineTests.cpp
index 6dd57b1..8c999c4 100644
--- a/libs/hwui/tests/unit/SkiaPipelineTests.cpp
+++ b/libs/hwui/tests/unit/SkiaPipelineTests.cpp
@@ -404,6 +404,7 @@
     EXPECT_TRUE(pipeline->isSurfaceReady());
     renderThread.destroyRenderingContext();
     EXPECT_FALSE(pipeline->isSurfaceReady());
+    LOG_ALWAYS_FATAL_IF(pipeline->isSurfaceReady());
 }
 
 RENDERTHREAD_SKIA_PIPELINE_TEST(SkiaPipeline, pictureCallback) {