libxml: LIBXML_STATIC isn't needed on windows either
libxml: LIBXML_STATIC isn't needed on windows either

In my previous patch today, I moved LIBXML_STATIC into a Windows-only
block in the gyp file.  It turns out I misread the #defines and it's
not needed on any OS.

libxml.h has this:
  #ifndef PIC
  #  define LIBXML_STATIC
  #endif
The PIC define mentioned there appears to be a Linuxism, which is fine
for us because we want it to be static anyway.

Review URL: http://codereview.chromium.org/2825052

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@53122 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