Rename UI_API to UI_EXPORT.

ui/base/gtk/event_synthesis_gtk.h

Index: ui/base/gtk/event_synthesis_gtk.h
===================================================================
--- ui/base/gtk/event_synthesis_gtk.h	(revision 95624)
+++ ui/base/gtk/event_synthesis_gtk.h	(working copy)
@@ -15,19 +15,19 @@
 #include <vector>
 
 #include "ui/base/keycodes/keyboard_codes.h"
-#include "ui/ui_api.h"
+#include "ui/base/ui_export.h"
 
 namespace ui {
 
 // Creates and returns a key event. Passes ownership to the caller.
-UI_API GdkEvent* SynthesizeKeyEvent(GdkWindow* event_window,
-                                    bool press,
-                                    guint gdk_key,
-                                    guint state);
+UI_EXPORT GdkEvent* SynthesizeKeyEvent(GdkWindow* event_window,
+                                       bool press,
+                                       guint gdk_key,
+                                       guint state);
 
 // Creates the proper sequence of key events for a key press + release.
 // Ownership of the events in the vector is passed to the caller.
-UI_API void SynthesizeKeyPressEvents(
+UI_EXPORT void SynthesizeKeyPressEvents(
     GdkWindow* window,
     KeyboardCode key,
     bool control, bool shift, bool alt,