SIMPLE_GM generates less code

gm/gm.cpp

Index: gm/gm.cpp
diff --git a/gm/gm.cpp b/gm/gm.cpp
index 57c5c5ded64bfeae76a10bbb56d1d55d83a5c3cc..ff17644fffc09bd2c7fcd0140565ac4eac28e72d 100644
--- a/gm/gm.cpp
+++ b/gm/gm.cpp
@@ -66,3 +66,15 @@ void GM::drawSizeBounds(SkCanvas* canvas, SkColor color) {
 
 // need to explicitly declare this, or we get some weird infinite loop llist
 template GMRegistry* GMRegistry::gHead;
+
+void skiagm::SimpleGM::onDraw(SkCanvas* canvas) {
+    fDrawProc(canvas);
+}
+
+SkISize skiagm::SimpleGM::onISize() {
+    return fSize;
+}
+
+SkString skiagm::SimpleGM::onShortName() {
+    return fName;
+}