Require sRGB write control for sRGB support. Add flag to GrPaint to suppress linear -> sRGB convers…

src/gpu/GrPipelineBuilder.cpp

Index: src/gpu/GrPipelineBuilder.cpp
diff --git a/src/gpu/GrPipelineBuilder.cpp b/src/gpu/GrPipelineBuilder.cpp
index f1d5c26168c8eceec4e6fbdbf3e39736d8da35a7..2eba5354fa0f1a9b19e3c33be2b300b99584fc4c 100644
--- a/src/gpu/GrPipelineBuilder.cpp
+++ b/src/gpu/GrPipelineBuilder.cpp
@@ -44,6 +44,8 @@ GrPipelineBuilder::GrPipelineBuilder(const GrPaint& paint, GrRenderTarget* rt, c
 
     this->setState(GrPipelineBuilder::kHWAntialias_Flag,
                    rt->isUnifiedMultisampled() && paint.isAntiAlias());
+    this->setState(GrPipelineBuilder::kDisableOutputConversionToSRGB_Flag,
+                   paint.getDisableOutputConversionToSRGB());
 }
 
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