Potentially optimize some GrGLEffects for known input color values

src/gpu/gl/GrGLProgramEffects.cpp

Index: src/gpu/gl/GrGLProgramEffects.cpp
diff --git a/src/gpu/gl/GrGLProgramEffects.cpp b/src/gpu/gl/GrGLProgramEffects.cpp
index 17c666a015b87369c631ec65f027dcc33b66baa0..9ab55c3f4e170adf4a7f7545ba8035608c5afcc1 100644
--- a/src/gpu/gl/GrGLProgramEffects.cpp
+++ b/src/gpu/gl/GrGLProgramEffects.cpp
@@ -263,7 +263,7 @@ void GrGLVertexProgramEffects::emitEffect(GrGLFullShaderBuilder* builder,
                                           const GrEffectStage& stage,
                                           EffectKey key,
                                           const char* outColor,
-                                          const char* inColor,
+                                          const GrGLSLExpr4& inColor,
                                           int stageIndex) {
     GrDrawEffect drawEffect(stage, fHasExplicitLocalCoords);
     const GrEffectRef& effect = *stage.getEffect();
@@ -461,7 +461,7 @@ GrGLVertexProgramEffectsBuilder::GrGLVertexProgramEffectsBuilder(GrGLFullShaderB
 void GrGLVertexProgramEffectsBuilder::emitEffect(const GrEffectStage& stage,
                                                  GrGLProgramEffects::EffectKey key,
                                                  const char* outColor,
-                                                 const char* inColor,
+                                                 const GrGLSLExpr4& inColor,
                                                  int stageIndex) {
     SkASSERT(NULL != fProgramEffects.get());
     fProgramEffects->emitEffect(fBuilder, stage, key, outColor, inColor, stageIndex);
@@ -473,7 +473,7 @@ void GrGLTexGenProgramEffects::emitEffect(GrGLFragmentOnlyShaderBuilder* builder
                                           const GrEffectStage& stage,
                                           EffectKey key,
                                           const char* outColor,
-                                          const char* inColor,
+                                          const GrGLSLExpr4& inColor,
                                           int stageIndex) {
     GrDrawEffect drawEffect(stage, false);
     const GrEffectRef& effect = *stage.getEffect();
@@ -579,7 +579,7 @@ GrGLTexGenProgramEffectsBuilder::GrGLTexGenProgramEffectsBuilder(
 void GrGLTexGenProgramEffectsBuilder::emitEffect(const GrEffectStage& stage,
                                                  GrGLProgramEffects::EffectKey key,
                                                  const char* outColor,
-                                                 const char* inColor,
+                                                 const GrGLSLExpr4& inColor,
                                                  int stageIndex) {
     SkASSERT(NULL != fProgramEffects.get());
     fProgramEffects->emitEffect(fBuilder, stage, key, outColor, inColor, stageIndex);