Getting rid of DelegatedFrameData

content/browser/renderer_host/render_widget_host_view_mac.mm

Index: content/browser/renderer_host/render_widget_host_view_mac.mm
diff --git a/content/browser/renderer_host/render_widget_host_view_mac.mm b/content/browser/renderer_host/render_widget_host_view_mac.mm
index cc31931f5b54c7d159506bb8a5ae3bd394cb43b9..e59728dcc42f2dd4bfd0fdea91e63eb92d856e8f 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac.mm
+++ b/content/browser/renderer_host/render_widget_host_view_mac.mm
@@ -1407,15 +1407,9 @@ void RenderWidgetHostViewMac::OnSwapCompositorFrame(
 
   page_at_minimum_scale_ =
       frame.metadata.page_scale_factor == frame.metadata.min_page_scale_factor;
-  if (frame.delegated_frame_data) {
-    browser_compositor_->SwapCompositorFrame(compositor_frame_sink_id,
-                                             std::move(frame));
-    UpdateDisplayVSyncParameters();
-  } else {
-    DLOG(ERROR) << "Received unexpected frame type.";
-    bad_message::ReceivedBadMessage(render_widget_host_->GetProcess(),
-                                    bad_message::RWHVM_UNEXPECTED_FRAME_TYPE);

[boliu, 2016/10/25 23:00:30]

you can mark this enum as unused in bad_message.h, also you can stop including
bad_message.h here

-  }
+  browser_compositor_->SwapCompositorFrame(compositor_frame_sink_id,
+                                           std::move(frame));
+  UpdateDisplayVSyncParameters();
 }
 
 void RenderWidgetHostViewMac::ClearCompositorFrame() {