Remove unused encodedString API on SkWriteBuffer/SkReadBuffer

src/core/SkValidatingReadBuffer.cpp

 /*
  * Copyright 2013 Google Inc.
  *
  * Use of this source code is governed by a BSD-style license that can be
  * found in the LICENSE file.
  */
 
 #include "SkBitmap.h"
 #include "SkErrorInternals.h"
 #include "SkValidatingReadBuffer.h"
@@ skipping 92 matching lines @@
     const size_t alignedSize = SkAlign4(len + 1);
     this->skip(alignedSize);
     if (!fError) {
         this->validate(cptr[len] == '\0');
     }
     if (!fError) {
         string->set(cptr, len);
     }
 }
 
-void* SkValidatingReadBuffer::readEncodedString(size_t* length, SkPaint::TextEncoding encoding) {
-    const int32_t encodingType = this->readInt();
-    this->validate(encodingType == encoding);
-    *length = this->readInt();
-    const void* ptr = this->skip(SkAlign4(*length));
-    void* data = nullptr;
-    if (!fError) {
-        data = sk_malloc_throw(*length);
-        memcpy(data, ptr, *length);
-    }
-    return data;
-}
-
 void SkValidatingReadBuffer::readPoint(SkPoint* point) {
     point->fX = this->readScalar();
     point->fY = this->readScalar();
 }
 
 void SkValidatingReadBuffer::readMatrix(SkMatrix* matrix) {
     size_t size = 0;
     if (!fError) {
         size = matrix->readFromMemory(fReader.peek(), fReader.available());
         this->validate((SkAlign4(size) == size) && (0 != size));
@@ skipping 161 matching lines @@
 
 void SkValidatingReadBuffer::skipFlattenable() {
     SkString name;
     this->readString(&name);
     if (fError) {
         return;
     }
     uint32_t sizeRecorded = this->readUInt();
     this->skip(sizeRecorded);
 }