Add a Blink API to set window features on a WebView.

public/web/WebView.h

Index: public/web/WebView.h
diff --git a/public/web/WebView.h b/public/web/WebView.h
index 128aae1b8c7e356c98a84892790989988ab5a582..2af78f3047418b99e8e010a2cd72783a7c7f11ac 100644
--- a/public/web/WebView.h
+++ b/public/web/WebView.h
@@ -64,6 +64,7 @@ struct WebActiveWheelFlingParameters;
 struct WebMediaPlayerAction;
 struct WebPluginAction;
 struct WebPoint;
+struct WebWindowFeatures;
 
 class WebView : public WebWidget {
 public:
@@ -145,6 +146,11 @@ public:
     // Allows disabling domain relaxation.
     virtual void setDomainRelaxationForbidden(bool, const WebString& scheme) = 0;
 
+    // Allows setting the state of the various bars exposed via BarProp
+    // properties on the window object. The size related fields of
+    // WebWindowFeatures are ignored.
+    virtual void setWindowFeatures(const WebWindowFeatures&) = 0;
+
 
     // Closing -------------------------------------------------------------