Use pid_t instead of not int32_t.

Bug: b/266595015
Test: atest PerformanceHintManagerTest
Change-Id: I51e0c2190117f9b439088e5a094dc3c74f5deeab
diff --git a/core/jni/android_os_PerformanceHintManager.cpp b/core/jni/android_os_PerformanceHintManager.cpp
index 0223b96..d8a2497 100644
--- a/core/jni/android_os_PerformanceHintManager.cpp
+++ b/core/jni/android_os_PerformanceHintManager.cpp
@@ -41,7 +41,7 @@
 typedef void (*APH_reportActualWorkDuration)(APerformanceHintSession*, int64_t);
 typedef void (*APH_closeSession)(APerformanceHintSession* session);
 typedef void (*APH_sendHint)(APerformanceHintSession*, int32_t);
-typedef void (*APH_setThreads)(APerformanceHintSession*, const int32_t*, size_t);
+typedef void (*APH_setThreads)(APerformanceHintSession*, const pid_t*, size_t);
 typedef void (*APH_getThreadIds)(APerformanceHintSession*, int32_t* const, size_t* const);
 
 bool gAPerformanceHintBindingInitialized = false;
diff --git a/native/android/performance_hint.cpp b/native/android/performance_hint.cpp
index dfbd7b5..27666caa 100644
--- a/native/android/performance_hint.cpp
+++ b/native/android/performance_hint.cpp
@@ -339,7 +339,7 @@
     return reinterpret_cast<APerformanceHintSession*>(session)->sendHint(hint);
 }
 
-int APerformanceHint_setThreads(APerformanceHintSession* session, const int32_t* threadIds,
+int APerformanceHint_setThreads(APerformanceHintSession* session, const pid_t* threadIds,
                                 size_t size) {
     if (session == nullptr) {
         return EINVAL;