First cut at implementation of FindBar for views / gtk...

views/controls/textfield/native_textfield_gtk.h

Index: views/controls/textfield/native_textfield_gtk.h
===================================================================
--- views/controls/textfield/native_textfield_gtk.h	(revision 25765)
+++ views/controls/textfield/native_textfield_gtk.h	(working copy)
@@ -43,6 +43,17 @@
  private:
   Textfield* textfield_;
 
+  // Callback when the entry text changes.
+  static gboolean OnKeyPressEventHandler(
+      GtkWidget* entry,
+      GdkEventKey* event,
+      NativeTextfieldGtk* textfield);
+  gboolean OnKeyPressEvent(GdkEventKey* event);
+  static gboolean OnChangedHandler(
+      GtkWidget* entry,
+      NativeTextfieldGtk* textfield);
+  gboolean OnChanged();
+
   DISALLOW_COPY_AND_ASSIGN(NativeTextfieldGtk);
 };