fix window's build errors

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 252 matching lines @@
     config->options.crop_left = region.fLeft;
     config->options.crop_top = region.fTop;
     config->options.crop_width = region.width();
     config->options.crop_height = region.height();
 
     return true;
 }
 
 bool SkWEBPImageDecoder::setDecodeConfig(SkBitmap* decodedBitmap,
                                          int width, int height) {
-    SkBitmap::Config config = this->getPrefConfig(k32Bit_SrcDepth, fHasAlpha);
+    SkBitmap::Config config = this->getPrefConfig(k32Bit_SrcDepth, SkToBool(fHasAlpha));
 
     // YUV converter supports output in RGB565, RGBA4444 and RGBA8888 formats.
     if (fHasAlpha) {
         if (config != SkBitmap::kARGB_4444_Config) {
             config = SkBitmap::kARGB_8888_Config;
         }
     } else {
         if (config != SkBitmap::kRGB_565_Config &&
             config != SkBitmap::kARGB_4444_Config) {
             config = SkBitmap::kARGB_8888_Config;
@@ skipping 246 matching lines @@
         return false;
     }
 
     SkAutoLockPixels alp(bm);
     SkAutoLockColors ctLocker;
     if (NULL == bm.getPixels()) {
         return false;
     }
 
     WebPConfig webp_config;
-    if (!WebPConfigPreset(&webp_config, WEBP_PRESET_DEFAULT, quality)) {
+    if (!WebPConfigPreset(&webp_config, WEBP_PRESET_DEFAULT, (float) quality)) {
         return false;
     }
 
     WebPPicture pic;
     WebPPictureInit(&pic);
     pic.width = bm.width();
     pic.height = bm.height();
     pic.writer = stream_writer;
     pic.custom_ptr = (void*)stream;
 
     const SkPMColor* colors = ctLocker.lockColors(bm);
     const uint8_t* src = (uint8_t*)bm.getPixels();
     const int rgbStride = pic.width * 3;
 
     // Import (for each scanline) the bit-map image (in appropriate color-space)
     // to RGB color space.
     uint8_t* rgb = new uint8_t[rgbStride * pic.height];
     for (int y = 0; y < pic.height; ++y) {
         scanline_import(src + y * bm.rowBytes(), rgb + y * rgbStride,
                         pic.width, colors);
     }
 
-    bool ok = WebPPictureImportRGB(&pic, rgb, rgbStride);
+    bool ok = (bool) WebPPictureImportRGB(&pic, rgb, rgbStride);
     delete[] rgb;
 
     ok = ok && WebPEncode(&webp_config, &pic);
     WebPPictureFree(&pic);
 
     return ok;
 }
 
 
 ///////////////////////////////////////////////////////////////////////////////
@@ skipping 12 matching lines @@
     // Magic matches, call decoder
     return SkNEW(SkWEBPImageDecoder);
 }
 
 static SkImageEncoder* sk_libwebp_efactory(SkImageEncoder::Type t) {
       return (SkImageEncoder::kWEBP_Type == t) ? SkNEW(SkWEBPImageEncoder) : NULL;
 }
 
 static SkTRegistry<SkImageDecoder*, SkStream*> gDReg(sk_libwebp_dfactory);
 static SkTRegistry<SkImageEncoder*, SkImageEncoder::Type> gEReg(sk_libwebp_efactory);