Introduce NavigatorWebDriver interface

content/browser/renderer_host/render_view_host_impl.cc

Index: content/browser/renderer_host/render_view_host_impl.cc
diff --git a/content/browser/renderer_host/render_view_host_impl.cc b/content/browser/renderer_host/render_view_host_impl.cc
index 083e53b5c6842c9ea688b372458141dc20bf914d..717c8745263b02b8605ea6ed3b852189172c99fd 100644
--- a/content/browser/renderer_host/render_view_host_impl.cc
+++ b/content/browser/renderer_host/render_view_host_impl.cc
@@ -107,6 +107,8 @@ using blink::WebInputEvent;
 using blink::WebMediaPlayerAction;
 using blink::WebPluginAction;
 
+const char kEnableAutomation[] = "enable-automation";

[bokan, 2017/05/19 16:43:23]

This should go in content_switches.cc/h

+
 namespace content {
 namespace {
 
@@ -554,6 +556,12 @@ WebPreferences RenderViewHostImpl::ComputeWebkitPrefs() {
   if (delegate_ && delegate_->HasPersistentVideo())
     prefs.media_controls_enabled = false;
 
+  if (command_line.HasSwitch(kEnableAutomation))
+    prefs.automation_controlled = true;
+
+  if (command_line.HasSwitch(switches::kHeadless))
+    prefs.headless = true;

[bokan, 2017/05/19 16:43:23]

Would it make sense to just set automation_controller = true if kHeadless is on
the command line, rather than adding a separate setting? It seems like you just
want headless to imply automation_controlled.

+
   prefs.background_video_track_optimization_enabled =
       base::FeatureList::IsEnabled(media::kBackgroundVideoTrackOptimization);