Added toString to SkDrawLooper-derived classes

https://codereview.appspot.com/7195054/



git-svn-id: http://skia.googlecode.com/svn/trunk@7422 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gyp/core.gypi b/gyp/core.gypi
index 82b9623..8c75c1f 100644
--- a/gyp/core.gypi
+++ b/gyp/core.gypi
@@ -157,6 +157,7 @@
         '<(skia_src_path)/core/SkSpriteBlitterTemplate.h',
         '<(skia_src_path)/core/SkStream.cpp',
         '<(skia_src_path)/core/SkString.cpp',
+        '<(skia_src_path)/core/SkStringUtils.cpp',
         '<(skia_src_path)/core/SkStroke.h',
         '<(skia_src_path)/core/SkStroke.cpp',
         '<(skia_src_path)/core/SkStrokeRec.cpp',
@@ -253,6 +254,7 @@
         '<(skia_include_path)/core/SkShader.h',
         '<(skia_include_path)/core/SkStream.h',
         '<(skia_include_path)/core/SkString.h',
+        '<(skia_include_path)/core/SkStringUtils.h',
         '<(skia_include_path)/core/SkStrokeRec.h',
         '<(skia_include_path)/core/SkTArray.h',
         '<(skia_include_path)/core/SkTDArray.h',