The two leaks are:
  missing unrefs in megalooper GM
  missing reset capability in oval renderer

This CL also expands the instance counting system to some recently adding classes (e.g., SkFontStyleSet)

R=bsalomon@google.com, jvanverth@google.com

Author: robertphillips@google.com

Review URL: https://chromiumcodereview.appspot.com/18461007

git-svn-id: http://skia.googlecode.com/svn/trunk@10030 2bbb7eff-a529-9590-31e7-b0007b416f81
diff --git a/src/lazy/SkPurgeableImageCache.cpp b/src/lazy/SkPurgeableImageCache.cpp
index 0f2c5e3..0d36e4a 100644
--- a/src/lazy/SkPurgeableImageCache.cpp
+++ b/src/lazy/SkPurgeableImageCache.cpp
@@ -13,6 +13,7 @@
     #include "SkTSearch.h"
 #endif
 
+SK_DEFINE_INST_COUNT(SkPurgeableImageCache)
 SK_DECLARE_STATIC_MUTEX(gPurgeableImageMutex);
 
 SkImageCache* SkPurgeableImageCache::Create() {