[gtk] gdkcairocontext*.h: Include cairo.h consistently

[Chun-wei Fan <fanchunwei src gnome org>]

commit 04b4c077f641c59f030eef9c6b0a4d27ebbe27a0
Author: Chun-wei Fan <fanchunwei src gnome org>
Date:   Tue May 15 13:27:10 2018 +0800

    gdkcairocontext*.h: Include cairo.h consistently
    
    The other sources include cairo.h by just using #include <cairo.h>, so
    do likewise here.

 gdk/gdkcairocontext.h        | 2 +-
 gdk/gdkcairocontextprivate.h | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/gdk/gdkcairocontext.h b/gdk/gdkcairocontext.h
index dc38701613..8d83da7594 100644
--- a/gdk/gdkcairocontext.h
+++ b/gdk/gdkcairocontext.h
@@ -28,7 +28,7 @@
 #include <gdk/gdkversionmacros.h>
 #include <gdk/gdktypes.h>
 
-#include <cairo/cairo.h>
+#include <cairo.h>
 
 G_BEGIN_DECLS
 
diff --git a/gdk/gdkcairocontextprivate.h b/gdk/gdkcairocontextprivate.h
index 728cb859b2..fd45c38573 100644
--- a/gdk/gdkcairocontextprivate.h
+++ b/gdk/gdkcairocontextprivate.h
@@ -25,7 +25,7 @@
 
 #include "gdkdrawcontextprivate.h"
 
-#include <cairo/cairo.h>
+#include <cairo.h>
 
 G_BEGIN_DECLS