Enable ARM NEON in Blink if compiling with Clang

third_party/WebKit/Source/wtf/CPU.h

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2013 Apple Inc. All rights reserved.
  * Copyright (C) 2007-2009 Torch Mobile, Inc.
  * Copyright (C) 2010, 2011 Research In Motion Limited. All rights reserved.
  * Copyright (C) 2013 Samsung Electronics. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
@@ skipping 119 matching lines @@
 #define WTF_CPU_ARM_THUMB2 0
 #else
 #error "Unsupported ARM architecture"
 #endif
 #endif /* !defined(WTF_CPU_ARM_THUMB2) */
 
 #if defined(__ARM_NEON__) && !defined(WTF_CPU_ARM_NEON)
 #define WTF_CPU_ARM_NEON 1
 #endif
 
-#if CPU(ARM_NEON) && (!COMPILER(GCC) || GCC_VERSION_AT_LEAST(4, 7, 0))
+#if CPU(ARM_NEON) && \
+    (COMPILER(CLANG) || !COMPILER(GCC) || GCC_VERSION_AT_LEAST(4, 7, 0))
 // All NEON intrinsics usage can be disabled by this macro.
 #define HAVE_ARM_NEON_INTRINSICS 1
 #endif
 
 #endif /* ARM */
 
 /* CPU(ARM64) - AArch64 64-bit */
 #if defined(__aarch64__)
 #define WTF_CPU_ARM64 1
 #define WTF_CPU_64BIT 1
@@ skipping 10 matching lines @@
 #if defined(__mips_msa) && defined(__mips_isa_rev) && (__mips_isa_rev >= 5)
 // All MSA intrinsics usage can be disabled by this macro.
 #define HAVE_MIPS_MSA_INTRINSICS 1
 #endif
 
 #if !defined(WTF_CPU_64BIT)
 #define WTF_CPU_32BIT 1
 #endif
 
 #endif /* WTF_CPU_h */