Add macro so that gpu trace marker can add an arg to the TRACE_EVENT it makes

src/gpu/GrContext.cpp

Index: src/gpu/GrContext.cpp
diff --git a/src/gpu/GrContext.cpp b/src/gpu/GrContext.cpp
index 85cc8cd78750ebfdb150e0f8013df07139588c08..4e833a1f96675ccfdc8f58510b36fdac1bec21cd 100755
--- a/src/gpu/GrContext.cpp
+++ b/src/gpu/GrContext.cpp
@@ -1226,7 +1226,7 @@ void GrContext::drawPath(const GrPaint& paint, const SkPath& path, const GrStrok
     GrDrawTarget* target = this->prepareToDraw(&paint, BUFFERED_DRAW, &are, &acf);
     GrDrawState* drawState = target->drawState();
 
-    GR_CREATE_TRACE_MARKER("GrContext::drawPath", target);
+    GR_CREATE_TRACE_MARKER1("GrContext::drawPath", target, "Is Convex", path.isConvex());
 
     const SkStrokeRec& strokeRec = strokeInfo.getStrokeRec();