Revert of Remove GP from drawstate, revision of invariant output for GP

src/gpu/effects/GrBitmapTextGeoProc.cpp

Index: src/gpu/effects/GrBitmapTextGeoProc.cpp
diff --git a/src/gpu/effects/GrBitmapTextGeoProc.cpp b/src/gpu/effects/GrBitmapTextGeoProc.cpp
index 9c5e82e8ffda7c3b3270ae6db4566a0fa44cb90f..1578fd8fe4f35794337efff1c9719ce624ff0e03 100644
--- a/src/gpu/effects/GrBitmapTextGeoProc.cpp
+++ b/src/gpu/effects/GrBitmapTextGeoProc.cpp
@@ -84,15 +84,15 @@
     return SkToBool(this->inColor()) == SkToBool(gp.inColor());
 }
 
-void GrBitmapTextGeoProc::onGetInvariantOutputCoverage(GrInitInvariantOutput* out) const {
+void GrBitmapTextGeoProc::onComputeInvariantOutput(GrInvariantOutput* inout) const {
     if (GrPixelConfigIsAlphaOnly(this->texture(0)->config())) {
-        out->setUnknownSingleComponent();
+        inout->mulByUnknownAlpha();
     } else if (GrPixelConfigIsOpaque(this->texture(0)->config())) {
-        out->setUnknownOpaqueFourComponents();
-        out->setUsingLCDCoverage();
+        inout->mulByUnknownOpaqueColor();
+        inout->setUsingLCDCoverage();
     } else {
-        out->setUnknownFourComponents();
-        out->setUsingLCDCoverage();
+        inout->mulByUnknownColor();
+        inout->setUsingLCDCoverage();
     }
 }