add client-context to SkWriteBuffer

Bug: skia:
Change-Id: I56c36060442c4008b09f322fb1d19e81cd75f910
Reviewed-on: https://skia-review.googlesource.com/66860
Reviewed-by: Khusal Sagar <khushalsagar@chromium.org>
Commit-Queue: Mike Reed <reed@google.com>

1 files changed, 13 insertions, 0 deletions

diff --git a/include/core/SkWriteBuffer.h b/include/core/SkWriteBuffer.h
index 6cbd4eaf54..48c09eaf27 100644
--- a/include/core/SkWriteBuffer.h
+++ b/include/core/SkWriteBuffer.h
@@ -66,8 +66,21 @@ public:
 
     void setDeduper(SkDeduper* deduper) { fDeduper = deduper; }
 
+    /**
+     *  Return a client specified context pointer. This is not interpreted by the writebuffer.
+     *  It defaults to nullptr, but may be set with setClientContext(...).
+     */
+    void* getClientContext() const { return fClientCtx; }
+
+    /**
+     *  Set the client specified context pointer. This is not interpreted by the writebuffer.
+     *  It defaults to nullptr. It can be inspected by calling getClientContext().
+     */
+    void setClientContext(void* ctx) { fClientCtx = ctx; }
+
 protected:
     SkDeduper* fDeduper = nullptr;
+    void*      fClientCtx = nullptr;
 };
 
 /**