Remove redundant method Binder.getNativeTid()

Bug: 177257934
Test: atest BinderCallsStatsTest
Change-Id: I797a580e7bf6bc3c7174d061c1cf86bccc5b1f3a

core/java/android/os/Binder.java

@@ -122,14 +122,6 @@ public class Binder implements IBinder {
 
     private static native long getNativeFinalizer();
 
-    /**
-     * Returns the TID (task ID) for the current thread. Same as {@link Thread#getNativeTid()}
-     *
-     * @hide
-     */
-    @CriticalNative
-    public static native int getNativeTid();
-
     // Use a Holder to allow static initialization of Binder in the boot image, and
     // possibly to avoid some initialization ordering issues.
     private static class NoImagePreloadHolder {

core/java/com/android/internal/os/BinderCallsStats.java

@@ -633,7 +633,7 @@ public class BinderCallsStats implements BinderInternal.Observer {
     }
 
     protected int getNativeTid() {
-        return Binder.getNativeTid();
+        return Process.myTid();
     }
 
     /**

core/jni/android_util_Binder.cpp

@@ -30,7 +30,6 @@
 #include <unistd.h>
 
 #include <android-base/stringprintf.h>
-#include <android-base/threads.h>
 #include <binder/BpBinder.h>
 #include <binder/IInterface.h>
 #include <binder/IPCThreadState.h>
@@ -1043,10 +1042,6 @@ static void android_os_Binder_setExtension(JNIEnv* env, jobject obj, jobject ext
     jbh->setExtension(extension);
 }
 
-static jint android_os_Binder_getNativeTid() {
-    return (jint)android::base::GetThreadId();
-}
-
 // ----------------------------------------------------------------------------
 
 static const JNINativeMethod gBinderMethods[] = {
@@ -1079,8 +1074,6 @@ 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 },
 };
 
 const char* const kBinderPathName = "android/os/Binder";