Turned on SkSL->GLSL compiler
GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=2288033003

Committed: https://skia.googlesource.com/skia/+/9b0fe3d125f237d9884732a48414fa85fc71b4e3
Committed: https://skia.googlesource.com/skia/+/b12b3c6908c62c908b3680be01e3b5bfd30de310
Committed: https://skia.googlesource.com/skia/+/f008b0a59f45c0d4bea3e66faf3b01805009ec89
Committed: https://skia.googlesource.com/skia/+/08b2ccf398e2b81bc05d2c105837e5419899469b
Committed: https://skia.googlesource.com/skia/+/dcfe6dba4a335e50e86ff68e3252065d4197432c
Committed: https://skia.googlesource.com/skia/+/ccb1dd8f267f9d7fe7c9d0ce222ebc81b41853b3
Review-Url: https://codereview.chromium.org/2288033003
diff --git a/src/gpu/glsl/GrGLSLFragmentShaderBuilder.cpp b/src/gpu/glsl/GrGLSLFragmentShaderBuilder.cpp
index d35730f..eb744a9 100644
--- a/src/gpu/glsl/GrGLSLFragmentShaderBuilder.cpp
+++ b/src/gpu/glsl/GrGLSLFragmentShaderBuilder.cpp
@@ -291,10 +291,10 @@
     if (!fHasCustomColorOutput) {
         fHasCustomColorOutput = true;
         fCustomColorOutputIndex = fOutputs.count();
-        fOutputs.push_back().set(kVec4f_GrSLType,
-                                 GrGLSLShaderVar::kOut_TypeModifier,
-                                 DeclaredColorOutputName());
-        fProgramBuilder->finalizeFragmentOutputColor(fOutputs.back());
+        fOutputs.push_back().set(kVec4f_GrSLType,  
+                                 GrGLSLShaderVar::kOut_TypeModifier,   
+                                 DeclaredColorOutputName());   
+        fProgramBuilder->finalizeFragmentOutputColor(fOutputs.back()); 
     }
 }
 
@@ -318,7 +318,7 @@
 }
 
 const char* GrGLSLFragmentShaderBuilder::getPrimaryColorOutputName() const {
-    return fHasCustomColorOutput ? DeclaredColorOutputName() : "gl_FragColor";
+    return fHasCustomColorOutput ? DeclaredColorOutputName() : "sk_FragColor";
 }
 
 void GrGLSLFragmentBuilder::declAppendf(const char* fmt, ...) {