Remove legacy names no longer referenced in Chrome and WebKit.
Review URL: https://codereview.appspot.com/7311055

git-svn-id: http://skia.googlecode.com/svn/trunk@7640 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/gm/gmmain.cpp b/gm/gmmain.cpp
index bbeb443..da7b79e 100644
--- a/gm/gmmain.cpp
+++ b/gm/gmmain.cpp
@@ -1503,7 +1503,7 @@
                 if (gr) {
                     // create a render target to back the device
                     GrTextureDesc desc;
-                    desc.fConfig = kSkia8888_PM_GrPixelConfig;
+                    desc.fConfig = kSkia8888_GrPixelConfig;
                     desc.fFlags = kRenderTarget_GrTextureFlagBit;
                     desc.fWidth = gm->getISize().width();
                     desc.fHeight = gm->getISize().height();