Use SkTextEncoding enum instead of macros.

Change-Id: I4b6259590fa0693ee0522b4999a1c0fe250b173d
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/212504
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
diff --git a/samplecode/SampleChineseFling.cpp b/samplecode/SampleChineseFling.cpp
index 1c2d7d3..e9631f2 100644
--- a/samplecode/SampleChineseFling.cpp
+++ b/samplecode/SampleChineseFling.cpp
@@ -95,7 +95,7 @@
             ToolUtils::add_to_text_blob_w_len(&builder,
                                               (const char*)glyphs,
                                               kWordLength * 4,
-                                              kUTF32_SkTextEncoding,
+                                              SkTextEncoding::kUTF32,
                                               font,
                                               0,
                                               0);
@@ -224,7 +224,7 @@
                 ToolUtils::add_to_text_blob_w_len(&builder,
                                                   (const char*)glyphs,
                                                   currentLineLength * 4,
-                                                  kUTF32_SkTextEncoding,
+                                                  SkTextEncoding::kUTF32,
                                                   font,
                                                   0,
                                                   y);