Can't include SkTypes.h from ports/

src/ports/SkMutex_pthread.h

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkMutex_pthread_DEFINED
 #define SkMutex_pthread_DEFINED
 
 /** Posix pthread_mutex based mutex. */
 
-#include "SkTypes.h"
 #include <errno.h>
 #include <pthread.h>
 
 // We use error-checking mutexes in Debug builds or normal fast mutexes in Release builds.
 // Debug builds get these checks for free:
 //   - a double acquire() from the same thread fails immediately instead of deadlocking;
 //   - release() checks that the mutex is being unlocked by its owner thread.
 // I don't see a built-in way to implement assertHeld(), so we track that with an fOwner field.
 
 // This isn't technically portable, but on Linux and Android pthread_t is some sort of int, and
@@ skipping 64 matching lines @@
 //
 // Without magic statics there are no thread safety guarantees on initialization
 // of local statics (even POD). As a result, it is illegal to use
 // SK_DECLARE_STATIC_MUTEX in a function.
 //
 // Because SkBaseMutex is not a primitive, a static SkBaseMutex cannot be
 // initialized in a class with this macro.
 #define SK_DECLARE_STATIC_MUTEX(name) namespace {} static SkBaseMutex name = SK_BASE_MUTEX_INIT
 
 #endif