Clean up the GrTHashTable API.

src/gpu/GrTextStrike_impl.h

Index: src/gpu/GrTextStrike_impl.h
diff --git a/src/gpu/GrTextStrike_impl.h b/src/gpu/GrTextStrike_impl.h
index 7f087fe05d18d07ef43b7e7979019bb895e1a1cc..abc2b8d114c625be19529e00af8a5050b9f2ff6a 100644
--- a/src/gpu/GrTextStrike_impl.h
+++ b/src/gpu/GrTextStrike_impl.h
@@ -13,9 +13,12 @@
 
 class GrFontCache::Key {
 public:
-    Key(GrFontScaler* scaler) {
+    explicit Key(GrFontScaler* scaler) {
         fFontScalerKey = scaler->getKey();
     }
+    explicit Key(const GrKey* fontScalarKey) {

[bsalomon, 2013/10/25 20:48:47]

does it make sense to have the GrFontScaler cons if we have this one?

[mtklein, 2013/10/25 21:08:21]

Nope.  Gone.

+        fFontScalerKey = fontScalarKey;
+    }
 
     intptr_t getHash() const { return fFontScalerKey->getHash(); }