Convert lzma_sdk to gyp.

Review URL: http://codereview.chromium.org/115004

git-svn-id: http://src.chromium.org/svn/trunk/src/build@16179 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

all.gyp

@@ -36,6 +36,7 @@
         '../third_party/libpng/libpng.gyp:*',
         '../third_party/libxml/libxml.gyp:*',
         '../third_party/libxslt/libxslt.gyp:*',
+        '../third_party/lzma_sdk/lzma_sdk.gyp:*',
         '../third_party/modp_b64/modp_b64.gyp:*',
         '../third_party/npapi/npapi.gyp:*',
         '../third_party/sqlite/sqlite.gyp:*',