Make SkTypeface::Style and FromOldStyle private.

These are no longer used outside of Skia, so make them private.

Change-Id: I735bb39c10553885cc6051aebddeff150ba4caa9
Reviewed-on: https://skia-review.googlesource.com/59180
Reviewed-by: Mike Reed <reed@google.com>
Commit-Queue: Ben Wagner <bungeman@google.com>
diff --git a/src/core/SkFontDescriptor.cpp b/src/core/SkFontDescriptor.cpp
index 519e8f2..14b0318 100644
--- a/src/core/SkFontDescriptor.cpp
+++ b/src/core/SkFontDescriptor.cpp
@@ -20,7 +20,6 @@
     // defines for names in its 'name' table.
     kFontAxes       = 0xFC,
     kFontIndex      = 0xFD,
-    kFontFileName   = 0xFE,  // Remove when MIN_PICTURE_VERSION > 41
     kSentinel       = 0xFF,
 };
 
@@ -34,14 +33,6 @@
     }
 }
 
-// Remove when MIN_PICTURE_VERSION > 41
-static void skip_string(SkStream* stream) {
-    const uint32_t length = SkToU32(stream->readPackedUInt());
-    if (length > 0) {
-        stream->skip(length);
-    }
-}
-
 static void write_string(SkWStream* stream, const SkString& string, uint32_t id) {
     if (!string.isEmpty()) {
         stream->writePackedUInt(id);
@@ -61,14 +52,9 @@
 
 bool SkFontDescriptor::Deserialize(SkStream* stream, SkFontDescriptor* result) {
     size_t styleBits = stream->readPackedUInt();
-    if (styleBits <= 2) {
-        // Remove this branch when MIN_PICTURE_VERSION > 45
-        result->fStyle = SkFontStyle::FromOldStyle(styleBits);
-    } else {
-        result->fStyle = SkFontStyle((styleBits >> 16) & 0xFFFF,
-                                     (styleBits >> 8 ) & 0xFF,
-                                     static_cast<SkFontStyle::Slant>(styleBits & 0xFF));
-    }
+    result->fStyle = SkFontStyle((styleBits >> 16) & 0xFFFF,
+                                 (styleBits >> 8 ) & 0xFF,
+                                 static_cast<SkFontStyle::Slant>(styleBits & 0xFF));
 
     SkAutoSTMalloc<4, SkFixed> axis;
     size_t axisCount = 0;
@@ -94,9 +80,6 @@
             case kFontIndex:
                 index = read_uint(stream);
                 break;
-            case kFontFileName:  // Remove when MIN_PICTURE_VERSION > 41
-                skip_string(stream);
-                break;
             default:
                 SkDEBUGFAIL("Unknown id used by a font descriptor");
                 return false;