Revert of Adding status to swap complete

content/common/gpu/null_transport_surface.cc

Index: content/common/gpu/null_transport_surface.cc
diff --git a/content/common/gpu/null_transport_surface.cc b/content/common/gpu/null_transport_surface.cc
index 33521a06d4c4965468afd69bce6aace448e28606..ebcea853a675f95a1d5a736e5754eb21d334da86 100644
--- a/content/common/gpu/null_transport_surface.cc
+++ b/content/common/gpu/null_transport_surface.cc
@@ -49,17 +49,15 @@
   // Do not destroy |surface_| since we use the shared offscreen surface.
 }
 
-gfx::SwapResult NullTransportSurface::SwapBuffers() {
+bool NullTransportSurface::SwapBuffers() {
   NOTIMPLEMENTED();
-  return gfx::SwapResult::SWAP_FAILED;
+  return false;
 }
 
-gfx::SwapResult NullTransportSurface::PostSubBuffer(int x,
-                                                    int y,
-                                                    int width,
-                                                    int height) {
+bool NullTransportSurface::PostSubBuffer(
+    int x, int y, int width, int height) {
   NOTIMPLEMENTED();
-  return gfx::SwapResult::SWAP_FAILED;
+  return false;
 }
 
 void NullTransportSurface::SendVSyncUpdateIfAvailable() {