Add initial VR interactive omnibox.

chrome/browser/android/vr_shell/ui_interface.h

Index: chrome/browser/android/vr_shell/ui_interface.h
diff --git a/chrome/browser/android/vr_shell/ui_interface.h b/chrome/browser/android/vr_shell/ui_interface.h
index cc825c3f5ad225a6c128357af140a7a821915a89..c6e10ddc435b66d9a128c5ecd86230076d85b887 100644
--- a/chrome/browser/android/vr_shell/ui_interface.h
+++ b/chrome/browser/android/vr_shell/ui_interface.h
@@ -12,6 +12,8 @@ class GURL;
 
 namespace vr_shell {
 
+class VrOmnibox;
+
 class UiCommandHandler {
  public:
   virtual void SendCommandToUi(const base::Value& value) = 0;
@@ -41,6 +43,10 @@ class UiInterface {
   void SetLoadProgress(double progress);
   void SetURL(const GURL& url);
 
+  // Omnibox input and output handling.
+  void HandleOmniboxInput(const base::DictionaryValue& input);
+  void SetOmniboxSuggestions(std::unique_ptr<base::Value> suggestions);
+
   // Called by WebUI when starting VR.
   void OnDomContentsLoaded();
   void SetUiCommandHandler(UiCommandHandler* handler);
@@ -56,6 +62,8 @@ class UiInterface {
   bool loaded_ = false;
   base::DictionaryValue updates_;
 
+  std::unique_ptr<VrOmnibox> omnibox_;
+
   DISALLOW_COPY_AND_ASSIGN(UiInterface);
 };