Remove gpu shader optimatization for solid white or trans black colors

src/gpu/gl/GrGLProgram.cpp

Index: src/gpu/gl/GrGLProgram.cpp
diff --git a/src/gpu/gl/GrGLProgram.cpp b/src/gpu/gl/GrGLProgram.cpp
index 435d0cdb02c988255244c53fc343ebf085fc44eb..cdb61402fa86ab6e3c7c4bf04dccd23fb03d50f9 100644
--- a/src/gpu/gl/GrGLProgram.cpp
+++ b/src/gpu/gl/GrGLProgram.cpp
@@ -178,10 +178,6 @@ void GrGLProgram::setColor(const GrDrawState& drawState,
                 }
                 sharedState->fConstAttribColorIndex = -1;
                 break;
-            case GrGLProgramDesc::kSolidWhite_ColorInput:
-            case GrGLProgramDesc::kTransBlack_ColorInput:
-                sharedState->fConstAttribColorIndex = -1;
-                break;
             default:
                 SkFAIL("Unknown color type.");

[bsalomon, 2014/07/11 14:29:52]

Since the enums are still defined but now not expected here, can you just change
the text to Unexpected instead of Unknown?

[egdaniel, 2014/07/11 15:01:25]

done.
On 2014/07/11 14:29:52, bsalomon wrote:

         }
@@ -218,7 +214,6 @@ void GrGLProgram::setCoverage(const GrDrawState& drawState,
                 sharedState->fConstAttribCoverageIndex = -1;
                 break;
             case GrGLProgramDesc::kSolidWhite_ColorInput:
-            case GrGLProgramDesc::kTransBlack_ColorInput:
                 sharedState->fConstAttribCoverageIndex = -1;
                 break;
             default: