SK_SUPPORT_LEGACY_GRTYPES to hide duplicate types from SkTypes.h

BUG=skia:
R=bsalomon@google.com

Author: reed@google.com

Review URL: https://codereview.chromium.org/216503004

git-svn-id: http://skia.googlecode.com/svn/trunk@13982 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/GrRenderTarget.cpp b/src/gpu/GrRenderTarget.cpp
index 729aa0d..9348dc1 100644
--- a/src/gpu/GrRenderTarget.cpp
+++ b/src/gpu/GrRenderTarget.cpp
@@ -73,7 +73,7 @@
     uint64_t size = fDesc.fWidth;
     size *= fDesc.fHeight;
     size *= colorBits;
-    size *= GrMax(1, fDesc.fSampleCnt);
+    size *= SkTMax(1, fDesc.fSampleCnt);
     return (size_t)(size / 8);
 }