Add luminance mask transfer modes.

bench/XfermodeBench.cpp

Index: bench/XfermodeBench.cpp
diff --git a/bench/XfermodeBench.cpp b/bench/XfermodeBench.cpp
index 0d85fefe1fbb9bc48973b5bfe8a23351b1818d80..a40956f3b0343ec8b5cb80e63fb89764464adb3e 100644
--- a/bench/XfermodeBench.cpp
+++ b/bench/XfermodeBench.cpp
@@ -87,6 +87,8 @@ static SkBenchmark* Fact25(void* p) { return new XfermodeBench(p, SkXfermode::kH
 static SkBenchmark* Fact26(void* p) { return new XfermodeBench(p, SkXfermode::kSaturation_Mode); }
 static SkBenchmark* Fact27(void* p) { return new XfermodeBench(p, SkXfermode::kColor_Mode); }
 static SkBenchmark* Fact28(void* p) { return new XfermodeBench(p, SkXfermode::kLuminosity_Mode); }
+static SkBenchmark* Fact29(void* p) { return new XfermodeBench(p, SkXfermode::kSrcInLum_Mode); }
+static SkBenchmark* Fact30(void* p) { return new XfermodeBench(p, SkXfermode::kDstInLum_Mode); }
 
 static BenchRegistry gReg00(Fact00);
 static BenchRegistry gReg01(Fact01);
@@ -117,3 +119,5 @@ static BenchRegistry gReg25(Fact25);
 static BenchRegistry gReg26(Fact26);
 static BenchRegistry gReg27(Fact27);
 static BenchRegistry gReg28(Fact28);
+static BenchRegistry gReg29(Fact29);
+static BenchRegistry gReg30(Fact30);