Support offscreen contexts which own their backing surface

content/public/common/content_switches.h

Index: content/public/common/content_switches.h
diff --git a/content/public/common/content_switches.h b/content/public/common/content_switches.h
index 5c4f9a5a78344c1e7b3922c0fa76b86a85190dbc..210899be821ed22728df968b69238e780347d4dd 100644
--- a/content/public/common/content_switches.h
+++ b/content/public/common/content_switches.h
@@ -163,6 +163,7 @@ CONTENT_EXPORT extern const char kEnableWebFontsInterventionTrigger[];
 CONTENT_EXPORT extern const char kEnableWebGLDraftExtensions[];
 CONTENT_EXPORT extern const char kEnableWebGLImageChromium[];
 CONTENT_EXPORT extern const char kEnableWebVR[];
+CONTENT_EXPORT extern const char kEnableWebVRExperimentalRendering[];

[amp, 2017/02/15 17:44:03]

You shouldn't need to add a separate switch.  Adding a feature automatically
provides a command line way of enabling it, via something like:
--enable-features=WebVRExperimentalRendering

[klausw, 2017/02/15 19:47:22]

Done, removed. I was following the WebVR example, didn't realize that I got the
two separate mechanisms mixed up.

 CONTENT_EXPORT extern const char kEnableZeroCopy[];
 CONTENT_EXPORT extern const char kExplicitlyAllowedPorts[];
 CONTENT_EXPORT extern const char kFieldTrialHandle[];