Pass a GrContext pointer in GrDrawContext constructor

src/gpu/GrDrawingManager.cpp

Index: src/gpu/GrDrawingManager.cpp
diff --git a/src/gpu/GrDrawingManager.cpp b/src/gpu/GrDrawingManager.cpp
index 5b23b0c694708be0bd1c92f457037e078ee0a9dd..30bdfe1c3dd7c1886cb82c49027ac1b6da5e22e8 100644
--- a/src/gpu/GrDrawingManager.cpp
+++ b/src/gpu/GrDrawingManager.cpp
@@ -196,5 +196,6 @@ GrDrawContext* GrDrawingManager::drawContext(GrRenderTarget* rt,
         return nullptr;
     }
 
-    return new GrDrawContext(this, rt, surfaceProps, fContext->getAuditTrail(), fSingleOwner);
+    return new GrDrawContext(fContext, this, rt, surfaceProps, fContext->getAuditTrail(),
+                             fSingleOwner);
 }