Add placement new macros to SkPostConfig, call SkNEW* from Ganesh.

TODO: unify with the placement new implementation in SkTemplatesPriv.h,
once various issues there are overcome. reed@ should be taking the lead
there.

http://codereview.appspot.com/6384043/



git-svn-id: http://skia.googlecode.com/svn/trunk@4492 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/gpu/SkGrFontScaler.cpp b/src/gpu/SkGrFontScaler.cpp
index 430b599..26412f4 100644
--- a/src/gpu/SkGrFontScaler.cpp
+++ b/src/gpu/SkGrFontScaler.cpp
@@ -95,7 +95,7 @@
 
 const GrKey* SkGrFontScaler::getKey() {
     if (NULL == fKey) {
-        fKey = new SkGrDescKey(fStrike->getDescriptor());
+        fKey = SkNEW_ARGS(SkGrDescKey, (fStrike->getDescriptor()));
     }
     return fKey;
 }