Rename GrContentKey to GrUniqueKey

src/effects/SkColorCubeFilter.cpp

Index: src/effects/SkColorCubeFilter.cpp
diff --git a/src/effects/SkColorCubeFilter.cpp b/src/effects/SkColorCubeFilter.cpp
index 31876aa1ec769f0aa89495cfee6bcdeaee9abfb2..552d000c9633ba6310757457248536ecd79e5c72 100644
--- a/src/effects/SkColorCubeFilter.cpp
+++ b/src/effects/SkColorCubeFilter.cpp
@@ -338,9 +338,9 @@ void GrColorCubeEffect::GLProcessor::GenKey(const GrProcessor& proc,
 }
 
 GrFragmentProcessor* SkColorCubeFilter::asFragmentProcessor(GrContext* context) const {
-    static const GrContentKey::Domain kDomain = GrContentKey::GenerateDomain();
-    GrContentKey key;
-    GrContentKey::Builder builder(&key, kDomain, 2);
+    static const GrUniqueKey::Domain kDomain = GrUniqueKey::GenerateDomain();
+    GrUniqueKey key;
+    GrUniqueKey::Builder builder(&key, kDomain, 2);
     builder[0] = fUniqueID;
     builder[1] = fCache.cubeDimension();
     builder.finish();