Extract a delegate interface from c/b/input_method to permit decoupling from c/b.

chrome/browser/chromeos/input_method/input_method_manager_impl.cc

Index: chrome/browser/chromeos/input_method/input_method_manager_impl.cc
diff --git a/chrome/browser/chromeos/input_method/input_method_manager_impl.cc b/chrome/browser/chromeos/input_method/input_method_manager_impl.cc
index a72b12746faf99cd4a9af144edcae71368b590e0..8a45e83c264eb4cdc1456121a4204fbabac2c19e 100644
--- a/chrome/browser/chromeos/input_method/input_method_manager_impl.cc
+++ b/chrome/browser/chromeos/input_method/input_method_manager_impl.cc
@@ -12,6 +12,7 @@
 #include "base/stringprintf.h"
 #include "chrome/browser/chromeos/input_method/browser_state_monitor.h"
 #include "chrome/browser/chromeos/input_method/candidate_window_controller.h"
+#include "chrome/browser/chromeos/input_method/input_method_delegate.h"
 #include "chrome/browser/chromeos/input_method/input_method_engine_ibus.h"
 #include "chrome/browser/chromeos/input_method/input_method_util.h"
 #include "chrome/browser/chromeos/input_method/xkeyboard.h"
@@ -32,9 +33,11 @@ bool Contains(const std::vector<std::string>& container,
 
 }  // namespace
 
-InputMethodManagerImpl::InputMethodManagerImpl()
-    : state_(STATE_LOGIN_SCREEN),
-      util_(GetSupportedInputMethods()) {
+InputMethodManagerImpl::InputMethodManagerImpl(
+    scoped_ptr<InputMethodDelegate> delegate)
+    : delegate_(delegate.Pass()),
+      state_(STATE_LOGIN_SCREEN),
+      util_(delegate_.get(), GetSupportedInputMethods()) {
 }
 
 InputMethodManagerImpl::~InputMethodManagerImpl() {
@@ -579,7 +582,7 @@ void InputMethodManagerImpl::OnDisconnected() {
 void InputMethodManagerImpl::Init() {
   DCHECK(!ibus_controller_.get());
 
-  browser_state_monitor_.reset(new BrowserStateMonitor(this));
+  browser_state_monitor_.reset(new BrowserStateMonitor(this, delegate_.get()));
   ibus_controller_.reset(IBusController::Create());
   xkeyboard_.reset(XKeyboard::Create(util_));
   ibus_controller_->AddObserver(this);
@@ -682,10 +685,5 @@ void InputMethodManagerImpl::MaybeInitializeCandidateWindowController() {
     DVLOG(1) << "Failed to initialize the candidate window controller";
 }
 
-// static
-InputMethodManagerImpl* InputMethodManagerImpl::GetInstanceForTesting() {
-  return new InputMethodManagerImpl;
-}
-
 }  // namespace input_method
 }  // namespace chromeos