Move GrInvariantOutput out of GrProcessor and into its own class.

src/gpu/GrPaint.cpp

Index: src/gpu/GrPaint.cpp
diff --git a/src/gpu/GrPaint.cpp b/src/gpu/GrPaint.cpp
index 94ea29195dbdc35a14bb6d2051fcaf0183c35a5c..fcd6da41b47fdcfbdb42b36f749efa9237e005e2 100644
--- a/src/gpu/GrPaint.cpp
+++ b/src/gpu/GrPaint.cpp
@@ -9,6 +9,7 @@
 #include "GrPaint.h"
 
 #include "GrBlend.h"
+#include "GrInvariantOutput.h"
 #include "effects/GrSimpleTextureEffect.h"
 
 void GrPaint::addColorTextureProcessor(GrTexture* texture, const SkMatrix& matrix) {
@@ -52,7 +53,7 @@ bool GrPaint::getOpaqueAndKnownColor(GrColor* solidColor,
 
     // TODO: Share this implementation with GrDrawState
 
-    GrProcessor::InvariantOutput inout;
+    GrInvariantOutput inout;
     inout.fColor = GrColorPackRGBA(fCoverage, fCoverage, fCoverage, fCoverage);
     inout.fValidFlags = kRGBA_GrColorComponentFlags;
     inout.fIsSingleComponent = true;