Revert of Start to vectorize SkTileGrid.

src/core/Sk4x.h

Index: src/core/Sk4x.h
diff --git a/src/core/Sk4x.h b/src/core/Sk4x.h
deleted file mode 100644
index 97881240b18dacfb36ef60e27d1bf7c20085cefc..0000000000000000000000000000000000000000
--- a/src/core/Sk4x.h
+++ /dev/null
@@ -1,92 +0,0 @@
-#ifndef Sk4x_DEFINED
-#define Sk4x_DEFINED
-
-#include "SkTypes.h"
-
-// First we'll let Clang try its best with whatever instructions are available.
-// Otherwise fall back on portable code.  This really should be a last resort.
-
-#define SK4X_PREAMBLE 1
-    #if defined(__clang__)
-        #include "Sk4x_clang.h"
-    #else
-        #include "Sk4x_portable.h"
-    #endif
-#undef SK4X_PREAMBLE
-
-template <typename T> class Sk4x;
-typedef Sk4x<int>   Sk4i;
-typedef Sk4x<float> Sk4f;
-
-template <typename T> class Sk4x {
-public:
-    Sk4x();  // Uninitialized; use Sk4x(0,0,0,0) for zero.
-    Sk4x(T, T, T, T);
-    explicit Sk4x(const T[4]);
-
-    Sk4x(const Sk4x&);
-    Sk4x& operator=(const Sk4x&);
-
-    void set(T, T, T, T);
-
-    void store(T[4]) const;
-
-    template <typename Dst> Dst reinterpret() const;
-    template <typename Dst> Dst cast() const;
-
-    bool allTrue() const;
-    bool anyTrue() const;
-
-    Sk4x bitNot() const;
-    Sk4x bitAnd(const Sk4x&) const;
-    Sk4x bitOr (const Sk4x&) const;
-
-    Sk4i            equal(const Sk4x&) const;
-    Sk4i         notEqual(const Sk4x&) const;
-    Sk4i         lessThan(const Sk4x&) const;
-    Sk4i      greaterThan(const Sk4x&) const;
-    Sk4i    lessThanEqual(const Sk4x&) const;
-    Sk4i greaterThanEqual(const Sk4x&) const;
-
-    Sk4x      add(const Sk4x&) const;
-    Sk4x subtract(const Sk4x&) const;
-    Sk4x multiply(const Sk4x&) const;
-    Sk4x   divide(const Sk4x&) const;
-
-    static Sk4x Min(const Sk4x& a, const Sk4x& b);
-    static Sk4x Max(const Sk4x& a, const Sk4x& b);
-
-    // Swizzles follow OpenCL xyzw convention.
-    Sk4x zwxy() const;
-
-    // When there's a second argument, it's abcd.
-    static Sk4x XYAB(const Sk4x& xyzw, const Sk4x& abcd);
-    static Sk4x ZWCD(const Sk4x& xyzw, const Sk4x& abcd);
-
-private:
-    // It's handy to have Sk4f and Sk4i be mutual friends.
-    template <typename S> friend class Sk4x;
-
-#define SK4X_PRIVATE 1
-    #if defined(__clang__)
-        #include "Sk4x_clang.h"
-    #else
-        #include "Sk4x_portable.h"
-    #endif
-#undef SK4X_PRIVATE
-};
-
-#if defined(__clang__)
-    #include "Sk4x_clang.h"
-#else
-    #include "Sk4x_portable.h"
-#endif
-
-// TODO ideas for enterprising coders:
-//   1) Add Sk4x_gcc.h?  __builtin_shuffle is fairly new, which is a pain.
-//   2) Sk4x_sse.h would be good for Windows, and could possibly beat _clang / _gcc
-//      (e.g. they can't generate _mm_movemask_ps for allTrue/anyTrue).
-//   3) Sk4x_neon.h might be a good idea if _clang / _gcc aren't good enough on ARM.
-
-
-#endif//Sk4x_DEFINED