move GrMalloc, GrFree, Gr_bzero to their sk equivalents

BUG=
R=bsalomon@google.com

Review URL: https://codereview.chromium.org/23566022

git-svn-id: http://skia.googlecode.com/svn/trunk/gyp@11486 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gpu.gypi b/gpu.gypi
index 73e12f8..83462f6 100644
--- a/gpu.gypi
+++ b/gpu.gypi
@@ -79,7 +79,6 @@
       '<(skia_src_path)/gpu/GrIndexBuffer.h',
       '<(skia_src_path)/gpu/GrInOrderDrawBuffer.cpp',
       '<(skia_src_path)/gpu/GrInOrderDrawBuffer.h',
-      '<(skia_src_path)/gpu/GrMemory.cpp',
       '<(skia_src_path)/gpu/GrMemoryPool.cpp',
       '<(skia_src_path)/gpu/GrMemoryPool.h',
       '<(skia_src_path)/gpu/GrOvalRenderer.cpp',