Removed last references to old sync points.

gpu/gles2_conform_support/egl/display.h

Index: gpu/gles2_conform_support/egl/display.h
diff --git a/gpu/gles2_conform_support/egl/display.h b/gpu/gles2_conform_support/egl/display.h
index acbf48f3e819cd07dc51d98853af52dfbc238b69..9aa0fb7e0cf1667ced718094cb1be4c21bb2be1f 100644
--- a/gpu/gles2_conform_support/egl/display.h
+++ b/gpu/gles2_conform_support/egl/display.h
@@ -91,11 +91,6 @@ class Display : private gpu::GpuControl {
                                      size_t height,
                                      unsigned internalformat,
                                      unsigned usage) override;
-  uint32_t InsertSyncPoint() override;
-  uint32_t InsertFutureSyncPoint() override;
-  void RetireSyncPoint(uint32_t sync_point) override;
-  void SignalSyncPoint(uint32_t sync_point,
-                       const base::Closure& callback) override;
   void SignalQuery(uint32_t query, const base::Closure& callback) override;
   void SetLock(base::Lock*) override;
   bool IsGpuChannelLost() override;