add SK_ATTR_DEPRECATED -- will need to disable for chrome, since it triggers a warning

src/images/SkImageDecoder_libwebp.cpp

 /*
  * Copyright 2010, The Android Open Source Project
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
  * You may obtain a copy of the License at
  *
  *     http://www.apache.org/licenses/LICENSE-2.0
  *
  * Unless required by applicable law or agreed to in writing, software
@@ skipping 503 matching lines @@
 class SkWEBPImageEncoder : public SkImageEncoder {
 protected:
     virtual bool onEncode(SkWStream* stream, const SkBitmap& bm, int quality) SK_OVERRIDE;
 
 private:
     typedef SkImageEncoder INHERITED;
 };
 
 bool SkWEBPImageEncoder::onEncode(SkWStream* stream, const SkBitmap& bm,
                                   int quality) {
-    const SkBitmap::Config config = bm.getConfig();
+    const SkBitmap::Config config = bm.config();
     const ScanlineImporter scanline_import = ChooseImporter(config);
     if (NULL == scanline_import) {
         return false;
     }
 
     SkAutoLockPixels alp(bm);
     SkAutoLockColors ctLocker;
     if (NULL == bm.getPixels()) {
         return false;
     }
@@ skipping 55 matching lines @@
     return SkImageDecoder::kUnknown_Format;
 }
 
 static SkImageEncoder* sk_libwebp_efactory(SkImageEncoder::Type t) {
       return (SkImageEncoder::kWEBP_Type == t) ? SkNEW(SkWEBPImageEncoder) : NULL;
 }
 
 static SkImageDecoder_DecodeReg gDReg(sk_libwebp_dfactory);
 static SkImageDecoder_FormatReg gFormatReg(get_format_webp);
 static SkImageEncoder_EncodeReg gEReg(sk_libwebp_efactory);