Rename TARGET_OS_* to HOST_OS_*.

runtime/vm/native_arguments.h

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef RUNTIME_VM_NATIVE_ARGUMENTS_H_
 #define RUNTIME_VM_NATIVE_ARGUMENTS_H_
 
 #include "platform/assert.h"
 #include "platform/memory_sanitizer.h"
 #include "vm/globals.h"
@@ skipping 15 matching lines @@
 
 #if defined(TARGET_ARCH_DBC)
 // C-stack is always aligned on DBC because we don't have any native code.
 #define CHECK_STACK_ALIGNMENT
 #elif defined(USING_SIMULATOR)
 #define CHECK_STACK_ALIGNMENT                                                  \
   {                                                                            \
     uword current_sp = Simulator::Current()->get_register(SPREG);              \
     ASSERT(Utils::IsAligned(current_sp, OS::ActivationFrameAlignment()));      \
   }
-#elif defined(TARGET_OS_WINDOWS)
+#elif defined(HOST_OS_WINDOWS)
 // The compiler may dynamically align the stack on Windows, so do not check.
 #define CHECK_STACK_ALIGNMENT                                                  \
   {}
 #else
 #define CHECK_STACK_ALIGNMENT                                                  \
   {                                                                            \
     uword (*func)() = reinterpret_cast<uword (*)()>(                           \
         StubCode::GetStackPointer_entry()->EntryPoint());                      \
     uword current_sp = func();                                                 \
     ASSERT(Utils::IsAligned(current_sp, OS::ActivationFrameAlignment()));      \
@@ skipping 211 matching lines @@
 
   Thread* thread_;      // Current thread pointer.
   intptr_t argc_tag_;   // Encodes argument count and invoked native call type.
   RawObject** argv_;    // Pointer to an array of arguments to runtime call.
   RawObject** retval_;  // Pointer to the return value area.
 };
 
 }  // namespace dart
 
 #endif  // RUNTIME_VM_NATIVE_ARGUMENTS_H_