Make Interaction Media Features MQ dynamic on Windows.

content/public/browser/render_view_host.h

Index: content/public/browser/render_view_host.h
diff --git a/content/public/browser/render_view_host.h b/content/public/browser/render_view_host.h
index 96012bdb767e7cd3000bbe3b8a81d27d65e8a20b..30ab69685ff7865ab6090bbc3a8f795fa41e9b01 100644
--- a/content/public/browser/render_view_host.h
+++ b/content/public/browser/render_view_host.h
@@ -148,6 +148,10 @@ class CONTENT_EXPORT RenderViewHost : public IPC::Sender {
   // Passes a list of Webkit preferences to the renderer.
   virtual void UpdateWebkitPreferences(const WebPreferences& prefs) = 0;
 
+  // Returns true if current input device features are different from the values
+  // stored in WebKit preferences.
+  virtual bool InputDeviceFeaturesChanged() = 0;
+
   // Notify the render view host to select the word around the caret.
   virtual void SelectWordAroundCaret() = 0;