Remove NaCl support.

src/base/platform/platform-posix.cc

Index: src/base/platform/platform-posix.cc
diff --git a/src/base/platform/platform-posix.cc b/src/base/platform/platform-posix.cc
index bb340ab5f95af47f8c455e91ceeb1c182c8d7434..682c44848f4da22c7cd21e318521c4ca5c04239c 100644
--- a/src/base/platform/platform-posix.cc
+++ b/src/base/platform/platform-posix.cc
@@ -55,7 +55,7 @@
 #include <sys/prctl.h>  // NOLINT, for prctl
 #endif
 
-#if !defined(V8_OS_NACL) && !defined(_AIX)
+#ifndef _AIX
 #include <sys/syscall.h>
 #endif
 
@@ -113,10 +113,6 @@ void OS::ProtectCode(void* address, const size_t size) {
 #if V8_OS_CYGWIN
   DWORD old_protect;
   VirtualProtect(address, size, PAGE_EXECUTE_READ, &old_protect);
-#elif V8_OS_NACL
-  // The Native Client port of V8 uses an interpreter, so
-  // code pages don't need PROT_EXEC.
-  mprotect(address, size, PROT_READ);
 #else
   mprotect(address, size, PROT_READ | PROT_EXEC);
 #endif
@@ -154,12 +150,6 @@ const char* OS::GetGCFakeMMapFile() {
 
 
 void* OS::GetRandomMmapAddr() {
-#if V8_OS_NACL
-  // TODO(bradchen): restore randomization once Native Client gets
-  // smarter about using mmap address hints.
-  // See http://code.google.com/p/nativeclient/issues/3341
-  return NULL;
-#endif
 #if defined(ADDRESS_SANITIZER) || defined(MEMORY_SANITIZER) || \
     defined(THREAD_SANITIZER)
   // Dynamic tools do not support custom mmap addresses.
@@ -256,11 +246,7 @@ void OS::DebugBreak() {
 #elif V8_HOST_ARCH_PPC
   asm("twge 2,2");
 #elif V8_HOST_ARCH_IA32
-#if V8_OS_NACL
-  asm("hlt");
-#else
   asm("int $3");
-#endif  // V8_OS_NACL
 #elif V8_HOST_ARCH_X64
   asm("int $3");
 #elif V8_HOST_ARCH_S390
@@ -358,17 +344,12 @@ int OS::GetCurrentThreadId() {
 //
 
 int OS::GetUserTime(uint32_t* secs, uint32_t* usecs) {
-#if V8_OS_NACL
-  // Optionally used in Logger::ResourceEvent.
-  return -1;
-#else
   struct rusage usage;
 
   if (getrusage(RUSAGE_SELF, &usage) < 0) return -1;
   *secs = static_cast<uint32_t>(usage.ru_utime.tv_sec);
   *usecs = static_cast<uint32_t>(usage.ru_utime.tv_usec);
   return 0;
-#endif
 }
 
 
@@ -614,8 +595,6 @@ void Thread::Start() {
   memset(&attr, 0, sizeof(attr));
   result = pthread_attr_init(&attr);
   DCHECK_EQ(0, result);
-  // Native client uses default stack size.
-#if !V8_OS_NACL
   size_t stack_size = stack_size_;
 #if V8_OS_AIX
   if (stack_size == 0) {
@@ -627,7 +606,6 @@ void Thread::Start() {
     result = pthread_attr_setstacksize(&attr, stack_size);
     DCHECK_EQ(0, result);
   }
-#endif
   {
     LockGuard<Mutex> lock_guard(&data_->thread_creation_mutex_);
     result = pthread_create(&data_->thread_, &attr, ThreadEntry, this);