Modified old wait sync point functions to also accept new sync tokens.

gpu/blink/webgraphicscontext3d_impl.h

Index: gpu/blink/webgraphicscontext3d_impl.h
diff --git a/gpu/blink/webgraphicscontext3d_impl.h b/gpu/blink/webgraphicscontext3d_impl.h
index e0cd53bf4f82b0b604af3062cc38491fb03a764b..a7cc29070d0a018d1fcd07e36b7d38adbc5e132b 100644
--- a/gpu/blink/webgraphicscontext3d_impl.h
+++ b/gpu/blink/webgraphicscontext3d_impl.h
@@ -37,8 +37,8 @@ class GPU_BLINK_EXPORT WebGraphicsContext3DImpl
 
   uint32_t lastFlushID() override;
 
-  unsigned int insertSyncPoint() override;
-  void waitSyncPoint(unsigned int sync_point) override;
+  bool insertSyncPoint(blink::WGC3Dbyte* sync_token) override;
+  void waitSyncToken(const blink::WGC3Dbyte* sync_token) override;
 
   void loseContextCHROMIUM(blink::WGC3Denum current,
                            blink::WGC3Denum other) override;