Move SkBase64 to utils, allow user defined encoding.


git-svn-id: http://skia.googlecode.com/svn/trunk@3148 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/utils.gyp b/gyp/utils.gyp
index d8c421d..8d2415a 100644
--- a/gyp/utils.gyp
+++ b/gyp/utils.gyp
@@ -39,6 +39,8 @@
         '../include/utils/SkUnitMappers.h',
         '../include/utils/SkWGL.h',
 
+        '../src/utils/SkBase64.cpp',
+        '../src/utils/SkBase64.h',
         '../src/utils/SkBoundaryPatch.cpp',
         '../src/utils/SkCamera.cpp',
         '../src/utils/SkColorMatrix.cpp',