Rename visual style "password" to "obscured"

ui/views/controls/textfield/native_textfield_gtk.h

Index: ui/views/controls/textfield/native_textfield_gtk.h
diff --git a/ui/views/controls/textfield/native_textfield_gtk.h b/ui/views/controls/textfield/native_textfield_gtk.h
index 0b4ae894139717e33434862e3e38858ec62ccae1..cc773a15884f55b8456b12a2996520483f21f769 100644
--- a/ui/views/controls/textfield/native_textfield_gtk.h
+++ b/ui/views/controls/textfield/native_textfield_gtk.h
@@ -44,7 +44,7 @@ class NativeTextfieldGtk : public NativeControlGtk,
   virtual void UpdateBackgroundColor() OVERRIDE;
   virtual void UpdateReadOnly() OVERRIDE;
   virtual void UpdateFont() OVERRIDE;
-  virtual void UpdateIsPassword() OVERRIDE;
+  virtual void UpdateIsObscured() OVERRIDE;
   virtual void UpdateEnabled() OVERRIDE;
   virtual gfx::Insets CalculateInsets() OVERRIDE;
   virtual void UpdateHorizontalMargins() OVERRIDE;
@@ -72,8 +72,8 @@ class NativeTextfieldGtk : public NativeControlGtk,
   virtual void CreateNativeControl() OVERRIDE;
   virtual void NativeControlCreated(GtkWidget* widget) OVERRIDE;
 
-  // Returns true if the textfield is for password.
-  bool IsPassword();
+  // Returns true if the textfield is obscured (shown as *****).
+  bool IsObscured();
 
  private:
   // Gtk signal callbacks.