Add a simpler key type for scratch resource keys.

src/gpu/GrStencilAndCoverTextContext.cpp

Index: src/gpu/GrStencilAndCoverTextContext.cpp
diff --git a/src/gpu/GrStencilAndCoverTextContext.cpp b/src/gpu/GrStencilAndCoverTextContext.cpp
index b5ab52319c953bdbbb6796804af5ce51c1f4b9d9..f8af8e606a9f067491a4dce30081774dca3bed7e 100644
--- a/src/gpu/GrStencilAndCoverTextContext.cpp
+++ b/src/gpu/GrStencilAndCoverTextContext.cpp
@@ -212,8 +212,7 @@ static GrPathRange* get_gr_glyphs(GrContext* ctx,
     keyData[0] = desc ? desc->getChecksum() : 0;
     keyData[0] = (keyData[0] << 32) | (typeface ? typeface->uniqueID() : 0);
     keyData[1] = GrPath::ComputeStrokeKey(stroke);
-    GrResourceKey resourceKey = GrResourceKey(GrCacheID(gGlyphsDomain, key),
-                                              GrPathRange::resourceType(), 0);
+    GrResourceKey resourceKey = GrResourceKey(GrCacheID(gGlyphsDomain, key), 0);
 
     SkAutoTUnref<GrPathRange> glyphs(
         static_cast<GrPathRange*>(ctx->findAndRefCachedResource(resourceKey)));