Add @CriticalNative to getNativeTid to improve performance

Bug: 158232997
Test: atest FrameworksCoreTests:com.android.internal.os.BinderCallsStatsTestBug
Change-Id: I5a5022921ba54354db59083f015d193d929ae0d5

core/java/android/os/Binder.java

@@ -127,6 +127,7 @@ public class Binder implements IBinder {
      *
      * @hide
      */
+    @CriticalNative
     public static native int getNativeTid();
 
     // Use a Holder to allow static initialization of Binder in the boot image, and

core/jni/android_util_Binder.cpp

@@ -1048,7 +1048,7 @@ static void android_os_Binder_setExtension(JNIEnv* env, jobject obj, jobject ext
     jbh->setExtension(extension);
 }
 
-JNIEXPORT jint JNICALL android_os_Binder_getNativeTid(JNIEnv* env, jobject clazz) {
+static jint android_os_Binder_getNativeTid() {
     return (jint)android::base::GetThreadId();
 }
 
@@ -1083,6 +1083,7 @@ static const JNINativeMethod gBinderMethods[] = {
     { "blockUntilThreadAvailable", "()V", (void*)android_os_Binder_blockUntilThreadAvailable },
     { "getExtension", "()Landroid/os/IBinder;", (void*)android_os_Binder_getExtension },
     { "setExtension", "(Landroid/os/IBinder;)V", (void*)android_os_Binder_setExtension },
+    // @CriticalNative
     { "getNativeTid", "()I", (void*)android_os_Binder_getNativeTid },
 };