Use relative filenames for internal includes.

include/libyuv/cpu_id.h

 /*
  *  Copyright 2011 The LibYuv Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS. All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
 #ifndef INCLUDE_LIBYUV_CPU_ID_H_  // NOLINT
 #define INCLUDE_LIBYUV_CPU_ID_H_
 
-#include "libyuv/basic_types.h"
+#include "basic_types.h"
 
 #ifdef __cplusplus
 namespace libyuv {
 extern "C" {
 #endif
 
 // Internal flag to indicate cpuid requires initialization.
 static const int kCpuInitialized = 0x1;
 
 // These flags are only valid on ARM processors.
@@ skipping 46 matching lines @@
 // ecx is typically the cpu number, and should normally be zero.
 LIBYUV_API
 void CpuId(uint32 eax, uint32 ecx, uint32* cpu_info);
 
 #ifdef __cplusplus
 }  // extern "C"
 }  // namespace libyuv
 #endif
 
 #endif  // INCLUDE_LIBYUV_CPU_ID_H_  NOLINT