[Retry] SyncFS: Support resolveLocalFileSystemURL on SyncFileSystem

Original review: https://codereview.chromium.org/23856002/

window.resolveLocalFileSystemURL is originally defined only for FileSystem API,
but it'd be nice if it works on SyncFileSystem in a similar way. For that this
change adds new IPC messages and interfaces.

Blink side change depends on this:
https://codereview.chromium.org/23537011/


BUG=177137,294502
TEST=manual (Get FileSystemURL for a file on SyncFS, and then resolve it)
TEST=unit_tests
TEST=run_webkit_tests.sh http/tests/filesystem/\*
TEST=run_webkit_tests.sh http/tests/inspector/filesystem/\*
TBR=tsepez@chromium.org
NOTRY=true

Review URL: https://chromiumcodereview.appspot.com/23526076

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@224542 0039d316-1c4b-4281-b951-d872f2087c98
SVN changes up to revision 224542