Add iOS to platform_os_emoji.

tools/sk_tool_utils.cpp

 /*
  * Copyright 2014 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "sk_tool_utils.h"
 #include "sk_tool_utils_flags.h"
 
@@ skipping 53 matching lines @@
         return gStandardFontNames[5][index];
     }
     return name;
 }
 
 const char* platform_os_emoji() {
     const char* osName = platform_os_name();
     if (!strcmp(osName, "Android") || !strcmp(osName, "Ubuntu")) {
         return "CBDT";
     }
-    if (!strncmp(osName, "Mac", 3)) {
+    if (!strncmp(osName, "Mac", 3) || !strncmp(osName, "iOS", 3)) {
         return "SBIX";
     }
     if (!strncmp(osName, "Win", 3)) {
         return "COLR";
     }
     return "";
 }
 
 sk_sp<SkTypeface> emoji_typeface() {
     if (!strcmp(sk_tool_utils::platform_os_emoji(), "CBDT")) {
@@ skipping 372 matching lines @@
     for (int y = 0; y < src.height(); ++y) {
         for (int x = 0; x < src.width(); ++x) {
             *dst.getAddr32(x, y) = blur_pixel(src, x, y, kernel.get(), wh);
         }
     }
 
     return dst;
 }
 
 }  // namespace sk_tool_utils