Split ui/base/ime into a new component

ui/base/ime/chromeos/character_composer.h

Index: ui/base/ime/chromeos/character_composer.h
diff --git a/ui/base/ime/chromeos/character_composer.h b/ui/base/ime/chromeos/character_composer.h
index 5d4267f384f5357f0b94ba934ae722fb5d2887d5..7c32d930bd274d843a6832ab2e67e06545e9e343 100644
--- a/ui/base/ime/chromeos/character_composer.h
+++ b/ui/base/ime/chromeos/character_composer.h
@@ -8,14 +8,14 @@
 #include <vector>
 
 #include "base/strings/string_util.h"
-#include "ui/base/ui_base_export.h"
+#include "ui/base/ime/ui_base_ime_export.h"
 
 namespace ui {
 class KeyEvent;
 
 // A class to recognize compose and dead key sequence.
 // Outputs composed character.
-class UI_BASE_EXPORT CharacterComposer {
+class UI_BASE_IME_EXPORT CharacterComposer {
  public:
   CharacterComposer();
   ~CharacterComposer();