Extensions must load in ctor

Because Caches is terrible

Change-Id: I91e2442d97664759ee2c7602eb7172f009b20d53
diff --git a/libs/hwui/Extensions.h b/libs/hwui/Extensions.h
index 8ccfabd..67cc747 100644
--- a/libs/hwui/Extensions.h
+++ b/libs/hwui/Extensions.h
@@ -31,7 +31,7 @@
 
 class Extensions {
 public:
-    void load();
+    Extensions();
 
     inline bool hasNPot() const { return mHasNPot; }
     inline bool hasFramebufferFetch() const { return mHasFramebufferFetch; }