Revert "Add GrPrimitiveType::kLinesAdjacency"

This reverts commit f7eb015083aba8942031145736251dd32094115d.

Reason for revert: Looks like this is causing build failures:
* https://chromium-swarm.appspot.com/task?id=36baaf4d376bbf10&refresh=10
* https://chromium-swarm.appspot.com/task?id=36baad1f17e93510&refresh=10


Original change's description:
> Add GrPrimitiveType::kLinesAdjacency
> 
> Converts GrPrimitiveType to an enum class and adds kLinesAdjacency.
> 
> Bug: skia:
> Change-Id: If57d26277182aac1375e8181211ddaf7ea6d1e0a
> Reviewed-on: https://skia-review.googlesource.com/19581
> Reviewed-by: Brian Salomon <bsalomon@google.com>
> Commit-Queue: Chris Dalton <csmartdalton@google.com>

TBR=bsalomon@google.com,csmartdalton@google.com

Change-Id: I37a1c575123b357abd8b9af9eea8871fe199f44b
No-Presubmit: true
No-Tree-Checks: true
No-Try: true
Bug: skia:
Reviewed-on: https://skia-review.googlesource.com/19661
Reviewed-by: Ravi Mistry <rmistry@google.com>
Commit-Queue: Ravi Mistry <rmistry@google.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/tests/OnFlushCallbackTest.cpp b/tests/OnFlushCallbackTest.cpp
index f8198687cb..f8026e816a 100644
--- a/tests/OnFlushCallbackTest.cpp
+++ b/tests/OnFlushCallbackTest.cpp
@@ -144,7 +144,7 @@ private:
             }
         }
 
-        GrMesh mesh(GrPrimitiveType::kTriangles);
+        GrMesh mesh(kTriangles_GrPrimitiveType);
         mesh.setIndexed(indexBuffer, 6, firstIndex, 0, 3);
         mesh.setVertexData(vertexBuffer, firstVertex);