Plumb GrContext everywhere

There is no good way to split the monster CL up. This breaks out
the GrContext plumbing but doesn't use it.

Change-Id: I90856d428d372bcec3f8821e6364667b367927d4
Reviewed-on: https://skia-review.googlesource.com/133382
Commit-Queue: Robert Phillips <robertphillips@google.com>
Reviewed-by: Greg Daniel <egdaniel@google.com>
diff --git a/src/gpu/ops/GrDashLinePathRenderer.cpp b/src/gpu/ops/GrDashLinePathRenderer.cpp
index 73c2b3e..7c2ff9e 100644
--- a/src/gpu/ops/GrDashLinePathRenderer.cpp
+++ b/src/gpu/ops/GrDashLinePathRenderer.cpp
@@ -50,8 +50,8 @@
     SkPoint pts[2];
     SkAssertResult(args.fShape->asLine(pts, nullptr));
     std::unique_ptr<GrDrawOp> op =
-            GrDashOp::MakeDashLineOp(std::move(args.fPaint), *args.fViewMatrix, pts, aaMode,
-                                     args.fShape->style(), args.fUserStencilSettings);
+            GrDashOp::MakeDashLineOp(args.fContext, std::move(args.fPaint), *args.fViewMatrix, pts,
+                                     aaMode, args.fShape->style(), args.fUserStencilSettings);
     if (!op) {
         return false;
     }