Disable assembly for x64 nacl.

BUG=253
TESTED=untested
R=mflodman@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/1857004

git-svn-id: http://libyuv.googlecode.com/svn/trunk@738 16f28f9a-4ce2-e073-06de-1de4eb20be90

README.chromium

 Name: libyuv
 URL: http://code.google.com/p/libyuv/
-Version: 737
+Version: 738
 License: BSD
 License File: LICENSE
 

include/libyuv/row.h

@@ -27,7 +27,8 @@ extern "C" {
 #define IS_ALIGNED(p, a) (!((uintptr_t)(p) & ((a) - 1)))
 
 #if defined(__CLR_VER) || defined(COVERAGE_ENABLED) || \
-    defined(TARGET_IPHONE_SIMULATOR)
+    defined(TARGET_IPHONE_SIMULATOR) || \
+    defined(__native_client__) && defined(__x86_64__)
 #define LIBYUV_DISABLE_X86
 #endif
 // True if compiling for SSSE3 as a requirement.

include/libyuv/version.h

@@ -11,6 +11,6 @@
 #ifndef INCLUDE_LIBYUV_VERSION_H_  // NOLINT
 #define INCLUDE_LIBYUV_VERSION_H_
 
-#define LIBYUV_VERSION 737
+#define LIBYUV_VERSION 738
 
 #endif  // INCLUDE_LIBYUV_VERSION_H_  NOLINT