Remove calls to set_process_name.

BUG:29824203

Change-Id: I67a1eb350cf9ea28c554166986df8fc251b666eb

cmds/app_process/app_main.cpp

@@ -299,8 +299,9 @@ int main(int argc, char* const argv[])
     }
 
     if (!niceName.isEmpty()) {
-        runtime.setArgv0(niceName.string());
-        set_process_name(niceName.string());
+        const char* procName = niceName.string();
+        pthread_setname_np(pthread_self(), procName);
+        runtime.setArgv0(procName);
     }
 
     if (zygote) {

core/jni/android_util_Process.cpp

@@ -411,9 +411,9 @@ void android_os_Process_setArgV0(JNIEnv* env, jobject clazz, jstring name)
         env->ReleaseStringCritical(name, str);
     }
 
-    if (name8.size() > 0) {
+    if (!name8.isEmpty()) {
         const char* procName = name8.string();
-        set_process_name(procName);
+        pthread_setname_np(pthread_self(), procName);
         AndroidRuntime::getRuntime()->setArgv0(procName);
     }
 }