Add processor name to comment when printing out shaders.

BUG=skia:

Review URL: https://codereview.chromium.org/735153002

2 files changed, 3 insertions, 1 deletions

diff --git a/include/gpu/GrProcessorStage.h b/include/gpu/GrProcessorStage.h
index 6f8496db06..0f24a30a32 100644
--- a/include/gpu/GrProcessorStage.h
+++ b/include/gpu/GrProcessorStage.h
@@ -146,6 +146,8 @@ public:
         }
     }
 
+    const char* name() const { return fProc->name(); }
+
     const GrFragmentProcessor* getProcessor() const { return fProc.get(); }
 
     void convertToPendingExec() { fProc.convertToPendingExec(); }
diff --git a/src/gpu/gl/builders/GrGLProgramBuilder.cpp b/src/gpu/gl/builders/GrGLProgramBuilder.cpp
index 62032f89c6..f628db9289 100644
--- a/src/gpu/gl/builders/GrGLProgramBuilder.cpp
+++ b/src/gpu/gl/builders/GrGLProgramBuilder.cpp
@@ -296,7 +296,7 @@ void GrGLProgramBuilder::emitAndInstallProc(const Proc& proc,
 
     // Enclose custom code in a block to avoid namespace conflicts
     SkString openBrace;
-    openBrace.printf("{ // Stage %d\n", fStageIndex);
+    openBrace.printf("{ // Stage %d, %s\n", fStageIndex, proc.name());
     fFS.codeAppend(openBrace.c_str());
 
     this->emitAndInstallProc(proc, keyProvider.get(index), output->c_str(),