Completes crrev.com/23478020 and makes sure of detachment from IME.

http://crrev.com/23478020 was incomplete and this CL implements the rest.

BUG=280219
TEST=none

Review URL: https://chromiumcodereview.appspot.com/23615013

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@221748 0039d316-1c4b-4281-b951-d872f2087c98

ui/base/ime/input_method_tsf.cc

@@ -130,6 +130,11 @@ void InputMethodTSF::SetFocusedTextInputClient(TextInputClient* client) {
   InputMethodWin::SetFocusedTextInputClient(client);
 }
 
+void InputMethodTSF::DetachTextInputClient(TextInputClient* client) {
+  InputMethodWin::DetachTextInputClient(client);
+  ui::TSFBridge::GetInstance()->RemoveFocusedClient(client);
+}
+
 bool InputMethodTSF::IsCandidatePopupOpen() const {
   return tsf_event_observer_->IsCandidatePopupOpen();
 }

ui/base/ime/input_method_tsf.h

@@ -32,6 +32,7 @@ class UI_EXPORT InputMethodTSF : public InputMethodWin {
   virtual void OnCaretBoundsChanged(const TextInputClient* client) OVERRIDE;
   virtual void CancelComposition(const TextInputClient* client) OVERRIDE;
   virtual void SetFocusedTextInputClient(TextInputClient* client) OVERRIDE;
+  virtual void DetachTextInputClient(TextInputClient* client) OVERRIDE;
   virtual bool IsCandidatePopupOpen() const OVERRIDE;
 
   // Overridden from InputMethodBase:

ui/views/ime/input_method_bridge.cc

@@ -29,8 +29,7 @@ InputMethodBridge::~InputMethodBridge() {
   // this and go into |widget_|. NULL out |widget_| so we don't attempt to use
   // it.
   DetachFromWidget();
-  if (host_->GetTextInputClient() == this)
-    host_->SetFocusedTextInputClient(NULL);
+  host_->DetachTextInputClient(this);
 }
 
 void InputMethodBridge::OnFocus() {