Create helper functions to use in computeInvariantOutput calls

src/effects/SkMagnifierImageFilter.cpp

Index: src/effects/SkMagnifierImageFilter.cpp
diff --git a/src/effects/SkMagnifierImageFilter.cpp b/src/effects/SkMagnifierImageFilter.cpp
index 97e906832306234ff1c5393bfb7ffa47a7ef88e7..5199ec3e43a9c55dcc3e682af70739955b2c394e 100644
--- a/src/effects/SkMagnifierImageFilter.cpp
+++ b/src/effects/SkMagnifierImageFilter.cpp
@@ -229,7 +229,6 @@ bool GrMagnifierEffect::onIsEqual(const GrProcessor& sBase) const {
 
 void GrMagnifierEffect::onComputeInvariantOutput(InvariantOutput* inout) const {
     this->updateInvariantOutputForModulation(inout);

[bsalomon, 2014/10/10 19:48:16]

do we still want this function?

[egdaniel, 2014/10/13 16:44:57]

So the basic structure of this function is:

if(texture.isOpaque())
 mulByOpaqueColor();
else
 mulByUnknownColor();


This pattern is repeated in all our SingleTextureEffects so I feel like there is
still value to the function.

-    inout->fIsSingleComponent = false;
 }
 
 #endif