Remove ibus dependency from PanelService.

chrome/browser/chromeos/input_method/candidate_window_controller.cc

Index: chrome/browser/chromeos/input_method/candidate_window_controller.cc
diff --git a/chrome/browser/chromeos/input_method/candidate_window_controller.cc b/chrome/browser/chromeos/input_method/candidate_window_controller.cc
index c94fc8c30130e0c395c091f581b767154613a2a3..9994a3f1c041dbac73a71da7c9516c2427768a38 100644
--- a/chrome/browser/chromeos/input_method/candidate_window_controller.cc
+++ b/chrome/browser/chromeos/input_method/candidate_window_controller.cc
@@ -5,14 +5,20 @@
 #include "chrome/browser/chromeos/input_method/candidate_window_controller.h"
 
 #include "chrome/browser/chromeos/input_method/candidate_window_controller_impl.h"
+#include "chrome/browser/chromeos/input_method/ibus_controller.h"
 
 namespace chromeos {
 namespace input_method {
 
 // static
 CandidateWindowController*
-CandidateWindowController::CreateCandidateWindowController() {
-  return new CandidateWindowControllerImpl;
+CandidateWindowController::CreateCandidateWindowController(
+    IBusController* controller) {
+  CandidateWindowControllerImpl* candidate_window_controller =
+      new CandidateWindowControllerImpl;
+  // TODO(nona): Refine observer chain once IBusUiController is removed.
+  controller->AddObserver(candidate_window_controller);
+  return candidate_window_controller;
 }
 
 }  // namespace input_method