Color filters were ignored by the program cache fast path.

Change-Id: I08f2f02d356234a674be778d088e0558fd49c849
diff --git a/libs/hwui/ProgramCache.cpp b/libs/hwui/ProgramCache.cpp
index 1eac239..3cd85c8 100644
--- a/libs/hwui/ProgramCache.cpp
+++ b/libs/hwui/ProgramCache.cpp
@@ -417,7 +417,7 @@
     }
 
     // Optimization for common cases
-    if (!blendFramebuffer) {
+    if (!blendFramebuffer && description.colorOp == ProgramDescription::kColorNone) {
         bool fast = false;
 
         const bool noShader = !description.hasGradient && !description.hasBitmap;