Add libjpeg-turbo library (depends on yasm)

Mangle external function names to avoid conflict with libjpeg
Take advantage of direct color conversion (RGBA, BGRA, 565)
Prepare to use jpeg_skip_scanlines (when it is upstreamed)

BUG=skia:

Review URL: https://codereview.chromium.org/1180983002

1 files changed, 1 insertions, 0 deletions

diff --git a/src/codec/SkJpegDecoderMgr.h b/src/codec/SkJpegDecoderMgr.h
index 0775dc07f0..e65ef52c5a 100644
--- a/src/codec/SkJpegDecoderMgr.h
+++ b/src/codec/SkJpegDecoderMgr.h
@@ -18,6 +18,7 @@
 #include <stdio.h>
 
 extern "C" {
+    #include "jpeglibmangler.h"
     #include "jpeglib.h"
 }