Fix omnibox mouse click highlight/word select/focus issue in aura build.

views/controls/textfield/native_textfield_views.h

Index: views/controls/textfield/native_textfield_views.h
diff --git a/views/controls/textfield/native_textfield_views.h b/views/controls/textfield/native_textfield_views.h
index 17967bbbdc667f17b6828ad22d09a5762f488f4f..797d04176c74cb7dd62f80bc67d64b8c8bc4857c 100644
--- a/views/controls/textfield/native_textfield_views.h
+++ b/views/controls/textfield/native_textfield_views.h
@@ -215,6 +215,12 @@ class VIEWS_EXPORT NativeTextfieldViews : public TouchSelectionClientView,
   // explicitly if paste succeeded.
   bool Paste();
 
+  // Tracks the mouse clicks for single/double/triple clicks.
+  void TrackMouseClicks(const MouseEvent& event);
+
+  // Handles mouse press events.
+  void HandleMousePressEvent(const MouseEvent& event);
+
   // Checks if a char is ok to be inserted into the textfield. The |ch| is a
   // modified character, i.e., modifiers took effect when generating this char.
   static bool ShouldInsertChar(char16 ch, int flags);