gtk: Fix presubmit errors.

chrome/browser/gtk/gtk_chrome_button.h

 // Copyright (c) 2010 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CHROME_BROWSER_GTK_GTK_CHROME_BUTTON_H_
 #define CHROME_BROWSER_GTK_GTK_CHROME_BUTTON_H_
 #pragma once
 
 #include <gdk/gdk.h>
 #include <gtk/gtkbutton.h>
 
 G_BEGIN_DECLS
 
 #define GTK_TYPE_CHROME_BUTTON        (gtk_chrome_button_get_type ())
 #define GTK_CHROME_BUTTON(obj)                              \
   (G_TYPE_CHECK_INSTANCE_CAST((obj), GTK_TYPE_CHROME_BUTTON, GtkChromeButton))
 #define GTK_CHROME_BUTTON_CLASS(klass)                      \
   (G_TYPE_CHECK_CLASS_CAST((klass), GTK_TYPE_CHROME_BUTTON, \
                            GtkChromeButtonClass))
 #define GTK_IS_CHROME_BUTTON(obj)                           \
-  (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_CHROME_BUTTON))
+  (G_TYPE_CHECK_INSTANCE_TYPE((obj), GTK_TYPE_CHROME_BUTTON))
 #define GTK_IS_CHROME_BUTTON_CLASS(klass)                   \
-  (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_CHROME_BUTTON))
+  (G_TYPE_CHECK_CLASS_TYPE((klass), GTK_TYPE_CHROME_BUTTON))
 #define GTK_CHROME_BUTTON_GET_CLASS(obj)                    \
-  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_CHROME_BUTTON, GtkChromeButton))
+  (G_TYPE_INSTANCE_GET_CLASS((obj), GTK_TYPE_CHROME_BUTTON, GtkChromeButton))
 
 typedef struct _GtkChromeButton        GtkChromeButton;
 typedef struct _GtkChromeButtonClass   GtkChromeButtonClass;
 
 struct _GtkChromeButton {
   GtkButton button;
 };
 
 struct _GtkChromeButtonClass {
   GtkButtonClass parent_class;
@@ skipping 16 matching lines @@
 
 // Sets the partial hover state of the button. The acceptable range is 0.0 to
 // 1.0. If |state| is outside of that range, then revert the button to normal
 // hovering. This can be overridden by gtk_chrome_button_set_paint_state.
 void gtk_chrome_button_set_hover_state(GtkChromeButton* button,
                                        gdouble state);
 
 G_END_DECLS
 
 #endif  // CHROME_BROWSER_GTK_GTK_CHROME_BUTTON_H_