Spin off some fixes to land right away.

src/opts/SkPMFloat_SSE2.h

 #include "SkColorPriv.h"
-#include "SkPMFloat.h"
 #include <emmintrin.h>
 
 // For set(), we widen our 8 bit components (fix8) to 8-bit components in 16 bits (fix8_16),
 // then widen those to 8-bit-in-32-bits (fix8_32), convert those to floats (scaled),
 // then finally scale those down from [0.0f, 255.0f] to [0.0f, 1.0f] into fColor.
 
 // get() and clamped() do the opposite, working from [0.0f, 1.0f] floats to [0.0f, 255.0f],
 // to 8-bit-in-32-bit, to 8-bit-in-16-bit, back down to 8-bit components.
 // _mm_packus_epi16() gives us clamping for free while narrowing.
 
@@ skipping 14 matching lines @@
 
 inline SkPMColor SkPMFloat::clamped() const {
     __m128  scaled  = _mm_mul_ps(_mm_load_ps(fColor), _mm_set1_ps(255.0f));
     __m128i fix8_32 = _mm_cvtps_epi32(scaled),
             fix8_16 = _mm_packus_epi16(fix8_32, fix8_32),
             fix8    = _mm_packus_epi16(fix8_16, fix8_16);
     SkPMColor c = _mm_cvtsi128_si32(fix8);
     SkPMColorAssert(c);
     return c;
 }