Removed last references to old sync points.

cc/test/test_context_support.h

Index: cc/test/test_context_support.h
diff --git a/cc/test/test_context_support.h b/cc/test/test_context_support.h
index d82c7ae43d311091fb0a3526f19b5750bbcefb52..18d7efafbaf9d9b2bf98327213daf0eb74488ae5 100644
--- a/cc/test/test_context_support.h
+++ b/cc/test/test_context_support.h
@@ -26,8 +26,6 @@ class TestContextSupport : public gpu::ContextSupport {
   ~TestContextSupport() override;
 
   // gpu::ContextSupport implementation.
-  void SignalSyncPoint(uint32_t sync_point,
-                       const base::Closure& callback) override;
   void SignalSyncToken(const gpu::SyncToken& sync_token,
                        const base::Closure& callback) override;
   void SignalQuery(uint32_t query, const base::Closure& callback) override;
@@ -35,8 +33,6 @@ class TestContextSupport : public gpu::ContextSupport {
   void Swap() override;
   void PartialSwapBuffers(const gfx::Rect& sub_buffer) override;
   void CommitOverlayPlanes() override;
-  uint32_t InsertFutureSyncPointCHROMIUM() override;
-  void RetireSyncPointCHROMIUM(uint32_t sync_point) override;
   void ScheduleOverlayPlane(int plane_z_order,
                             gfx::OverlayTransform plane_transform,
                             unsigned overlay_texture_id,