Add support for blending of LCD for all blend modes.

src/gpu/GrPipelineBuilder.cpp

Index: src/gpu/GrPipelineBuilder.cpp
diff --git a/src/gpu/GrPipelineBuilder.cpp b/src/gpu/GrPipelineBuilder.cpp
index 54242e7a12b32c08ab76a16d90c33bc261ce5b54..3165a63598a0c0b2eab83e8c1f952a325aaaaaf6 100644
--- a/src/gpu/GrPipelineBuilder.cpp
+++ b/src/gpu/GrPipelineBuilder.cpp
@@ -122,3 +122,4 @@ void GrPipelineBuilder::calcCoverageInvariantOutput(const GrDrawBatch* batch) co
     fCoverageProcInfo.calcCoverageWithBatch(batch, fCoverageFragmentProcessors.begin(),
                                             this->numCoverageFragmentProcessors());
 }
+