Update SkOpts namespaces.

src/opts/SkBlurImageFilter_opts.h

 /*
  * Copyright 2015 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #ifndef SkBlurImageFilter_opts_DEFINED
 #define SkBlurImageFilter_opts_DEFINED
 
@@ skipping 70 matching lines @@
         vst1_lane_u32(dptr + width, px2, 1); \
     } else { \
         vst1_u8((uint8_t*)dptr, vmovn_u16(resultPixels)); \
     }
 
 #define INCREMENT_SUMS_DOUBLE(p) sum = vaddw_u8(sum, load_2_pixels(p))
 #define DECREMENT_SUMS_DOUBLE(p) sum = vsubw_u8(sum, load_2_pixels(p))
 
 // Fast path for kernel sizes between 2 and 127, working on two rows at a time.
 template<BlurDirection srcDirection, BlurDirection dstDirection>
-int box_blur_double(const SkPMColor** src, int srcStride, const SkIRect& srcBounds, SkPMColor** dst, int kernelSize,
-                     int leftOffset, int rightOffset, int width, int height) {
+static int box_blur_double(const SkPMColor** src, int srcStride, const SkIRect& srcBounds,
+                           SkPMColor** dst, int kernelSize,
+                           int leftOffset, int rightOffset, int width, int height) {
     // Load 2 pixels from adjacent rows.
     auto load_2_pixels = [&](const SkPMColor* s) {
         if (srcDirection == BlurDirection::kX) {
             // 10% faster by adding these 2 prefetches
             SK_PREFETCH(s + 16);
             SK_PREFETCH(s + 16 + srcStride);
             auto one = vld1_lane_u32(s +         0, vdup_n_u32(0), 0),
                  two = vld1_lane_u32(s + srcStride,           one, 1);
             return vreinterpret_u8_u32(two);
         } else {
@@ skipping 210 matching lines @@
     }
 }
 
 static auto box_blur_xx = &box_blur<BlurDirection::kX, BlurDirection::kX>,
             box_blur_xy = &box_blur<BlurDirection::kX, BlurDirection::kY>,
             box_blur_yx = &box_blur<BlurDirection::kY, BlurDirection::kX>;
 
 }  // namespace SK_OPTS_NS
 
 #endif