[GTK] Add WebP image support
https://bugs.webkit.org/show_bug.cgi?id=105915

Reviewed by Martin Robinson.

.:

WebP is from now on a dependency for WebKitGtk+.

* configure.ac: added WebP library detection.

Source/WebCore:

* GNUmakefile.am: add WTF_USE_WEBP definition.
* GNUmakefile.list.am: properly sort image decoders in the sources list.

Source/WebKit/gtk:

* GNUmakefile.am: link against WebP library.

Source/WebKit2:

* GNUmakefile.am: link against WebP library.

LayoutTests:

* platform/gtk/TestExpectations: unskipped two tests passing now
that we have WebP support.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@139046 268f45cc-cd09-0410-ab3c-d52691b4dbfc
[Qt][WK2] Unreviewed gardening after r138932.

* platform/qt-5.0-wk2/fast/ruby/ruby-beforeafter-expected.png: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-beforeafter-expected.txt: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-empty-rt-expected.png: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-empty-rt-expected.txt: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-length-expected.png: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-length-expected.txt: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-run-break-expected.png: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-run-break-expected.txt: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-runs-expected.png: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-runs-expected.txt: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-runs-spans-expected.png: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-runs-spans-expected.txt: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-simple-expected.png: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-simple-expected.txt: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-simple-rp-expected.png: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-simple-rp-expected.txt: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-trailing-expected.png: Added.
* platform/qt-5.0-wk2/fast/ruby/ruby-trailing-expected.txt: Added.

git-svn-id: http://svn.webkit.org/repository/webkit/trunk@139047 268f45cc-cd09-0410-ab3c-d52691b4dbfc