Remove separate cache for clip mask textures

Review URL: https://codereview.chromium.org/1377943003
diff --git a/tests/ResourceCacheTest.cpp b/tests/ResourceCacheTest.cpp
index 0036f83..83e4535 100644
--- a/tests/ResourceCacheTest.cpp
+++ b/tests/ResourceCacheTest.cpp
@@ -18,6 +18,7 @@
 #include "GrRenderTarget.h"
 #include "GrRenderTargetPriv.h"
 #include "GrResourceCache.h"
+#include "GrResourceProvider.h"
 #include "GrTest.h"
 #include "SkCanvas.h"
 #include "SkGr.h"