Remove GrRandom API in favor of SkRandom.

TEST=tests
R=bsalomon@google.com

Review URL: https://codereview.appspot.com/6855062

git-svn-id: http://skia.googlecode.com/svn/trunk/gyp@6539 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu.gypi b/gpu.gypi
index 787ffc9..018a9d6 100644
--- a/gpu.gypi
+++ b/gpu.gypi
@@ -91,7 +91,6 @@
       '<(skia_src_path)/gpu/GrPathUtils.cpp',
       '<(skia_src_path)/gpu/GrPathUtils.h',
       '<(skia_src_path)/gpu/GrPlotMgr.h',
-      '<(skia_src_path)/gpu/GrRandom.h',
       '<(skia_src_path)/gpu/GrRectanizer.cpp',
       '<(skia_src_path)/gpu/GrRectanizer.h',
       '<(skia_src_path)/gpu/GrRedBlackTree.h',