SkLazyPtr follow ups

 - moves test to LazyPtrTest.cpp
 - adds the ability to use a Create() method with an argument

BUG=skia:

Review URL: https://codereview.chromium.org/669783002
diff --git a/gyp/tests.gypi b/gyp/tests.gypi
index 422a22e..827d6e3 100644
--- a/gyp/tests.gypi
+++ b/gyp/tests.gypi
@@ -130,7 +130,7 @@
     '../tests/LListTest.cpp',
     '../tests/LayerDrawLooperTest.cpp',
     '../tests/LayerRasterizerTest.cpp',
-    '../tests/LazyPtr.cpp',
+    '../tests/LazyPtrTest.cpp',
     '../tests/MD5Test.cpp',
     '../tests/MallocPixelRefTest.cpp',
     '../tests/MathTest.cpp',