Revert of SkPDF: Move SkFlate into src/pdf (part 1/3)

gyp/skflate.gyp

Index: gyp/skflate.gyp
diff --git a/gyp/skflate.gyp b/gyp/skflate.gyp
new file mode 100644
index 0000000000000000000000000000000000000000..d3193a3a4a9399077bcd915c1b1c9b3f63250c78
--- /dev/null
+++ b/gyp/skflate.gyp
@@ -0,0 +1,18 @@
+# Copyright 2015 Google Inc.
+#
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+# Target for including SkFlate.
+{
+  'targets': [
+    {
+      'target_name': 'skflate',
+      'type': 'static_library',
+      'dependencies': [
+        'skia_lib.gyp:skia_lib',
+        'zlib.gyp:zlib',
+      ],
+      'sources': [ '../src/core/SkFlate.cpp' ],
+    },
+  ],
+}