Add a .gypi to insulate Chrome from refactorings in src/record.

gyp/record.gyp

Index: gyp/record.gyp
diff --git a/gyp/record.gyp b/gyp/record.gyp
index e001994286228058aa82bab7b9a99363a9e2f431..0bfd83e0f34dc19aa82e223e2132c3a614f3f42f 100644
--- a/gyp/record.gyp
+++ b/gyp/record.gyp
@@ -3,6 +3,7 @@
     'targets': [{
         'target_name': 'record',
         'type': 'static_library',
+        'includes': [ 'record.gypi' ],
         'include_dirs': [
             '../include/config',
             '../include/core',
@@ -13,11 +14,5 @@
                 '../include/record',  # Public headers.
             ],
         },
-        'sources': [
-            '../src/record/SkRecordOpts.cpp',
-            '../src/record/SkRecordDraw.cpp',
-            '../src/record/SkRecorder.cpp',
-            '../src/record/SkRecording.cpp',
-        ],
     }]
 }