Construct Choreographer with sp<>::make().

The instance consructed in this way is passed to call sites expecting
sp<>, so it must be constructed as such.

Bug: 393217449
Test: presubmit
Flag: EXEMPT_refactor
Change-Id: I34d5be7c6abf5b37472a79be80ac10cd07dd731c

Author: Anton Ivanov

libs/gui/Choreographer.cpp

@@ -69,7 +69,7 @@ namespace android {
 
 Choreographer::Context Choreographer::gChoreographers;
 
-static thread_local Choreographer* gChoreographer;
+static thread_local sp<Choreographer> gChoreographer;
 
 void Choreographer::initJVM(JNIEnv* env) {
     env->GetJavaVM(&gJni.jvm);
@@ -86,21 +86,21 @@ void Choreographer::initJVM(JNIEnv* env) {
                              "()V");
 }
 
-Choreographer* Choreographer::getForThread() {
+sp<Choreographer> Choreographer::getForThread() {
     if (gChoreographer == nullptr) {
         sp<Looper> looper = Looper::getForThread();
         if (!looper.get()) {
             ALOGW("No looper prepared for thread");
             return nullptr;
         }
-        gChoreographer = new Choreographer(looper);
+        gChoreographer = sp<Choreographer>::make(looper);
         status_t result = gChoreographer->initialize();
         if (result != OK) {
             ALOGW("Failed to initialize");
             return nullptr;
         }
     }
-    return gChoreographer;
+    return gChoreographer.get();
 }
 
 Choreographer::Choreographer(const sp<Looper>& looper, const sp<IBinder>& layerHandle)

libs/gui/include/gui/Choreographer.h

@@ -103,7 +103,7 @@ class Choreographer : public DisplayEventDispatcher, public MessageHandler {
     virtual void handleMessage(const Message& message) override;
 
     static void initJVM(JNIEnv* env);
-    static Choreographer* getForThread();
+    static sp<Choreographer> getForThread();
     static void signalRefreshRateCallbacks(nsecs_t vsyncPeriod) EXCLUDES(gChoreographers.lock);
     static int64_t getStartTimeNanosForVsyncId(AVsyncId vsyncId) EXCLUDES(gChoreographers.lock);
     virtual ~Choreographer() override EXCLUDES(gChoreographers.lock);

libs/gui/tests/Choreographer_test.cpp

@@ -50,7 +50,7 @@ static void vsyncCallback(const AChoreographerFrameCallbackData* callbackData, v
 
 TEST_F(ChoreographerTest, InputCallbackBeforeAnimation) {
     sp<Looper> looper = Looper::prepare(0);
-    Choreographer* choreographer = Choreographer::getForThread();
+    sp<Choreographer> choreographer = Choreographer::getForThread();
     VsyncCallback animationCb;
     choreographer->postFrameCallbackDelayed(nullptr, nullptr, vsyncCallback, &animationCb, 0,
                                             CALLBACK_ANIMATION);
@@ -83,4 +83,4 @@ TEST_F(ChoreographerTest, InputCallbackBeforeAnimation) {
                                            animationCb.frameTime.count());
 }
 
-} // namespace android
+} // namespace android

libs/nativedisplay/AChoreographer.cpp

@@ -142,7 +142,7 @@ static inline AChoreographer* Choreographer_to_AChoreographer(Choreographer* cho
 }
 
 AChoreographer* AChoreographer_getInstance() {
-    return Choreographer_to_AChoreographer(Choreographer::getForThread());
+    return Choreographer_to_AChoreographer(Choreographer::getForThread().get());
 }
 
 void AChoreographer_postFrameCallback(AChoreographer* choreographer,