Optimizes JPEGCodec for libjpeg-turbo Libjpeg-turbo can use RGBA and BGRA pixels used by Chromium as its input or output. This change uses these converters to avoid memory copies when the output format is RGBA or BGRA.
Optimizes JPEGCodec for libjpeg-turbo
Libjpeg-turbo can use RGBA and BGRA pixels used by Chromium as its input or output. This change uses these converters to avoid memory copies when the output format is RGBA or BGRA.

BUG=none
TEST=none
Review URL: http://codereview.chromium.org/6603010

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@77444 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser