Remove the 2-level input method system & InputMethodBridge.

ui/views/controls/combobox/combobox.cc

Index: ui/views/controls/combobox/combobox.cc
diff --git a/ui/views/controls/combobox/combobox.cc b/ui/views/controls/combobox/combobox.cc
index e1c7586f2de4cbf49502916bd876eecbb9099ab5..b0936c26687e981a08b564acdad291a60cdbf653 100644
--- a/ui/views/controls/combobox/combobox.cc
+++ b/ui/views/controls/combobox/combobox.cc
@@ -9,6 +9,7 @@
 #include "base/message_loop/message_loop_proxy.h"
 #include "base/strings/utf_string_conversions.h"
 #include "ui/accessibility/ax_view_state.h"
+#include "ui/base/ime/input_method.h"
 #include "ui/base/models/combobox_model.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/events/event.h"
@@ -33,7 +34,6 @@
 #include "ui/views/controls/menu/submenu_view.h"
 #include "ui/views/controls/prefix_selector.h"
 #include "ui/views/controls/textfield/textfield.h"
-#include "ui/views/ime/input_method.h"
 #include "ui/views/mouse_constants.h"
 #include "ui/views/painter.h"
 #include "ui/views/widget/widget.h"
@@ -273,6 +273,8 @@ Combobox::Combobox(ui::ComboboxModel* model)
 
 Combobox::~Combobox() {
   model_->RemoveObserver(this);
+  if (GetTextInputClient() && GetInputMethod())
+    GetInputMethod()->DetachTextInputClient(GetTextInputClient());
 }
 
 // static
@@ -540,14 +542,18 @@ void Combobox::OnPaint(gfx::Canvas* canvas) {
 }
 
 void Combobox::OnFocus() {
-  GetInputMethod()->OnFocus();
+  if (GetTextInputClient() && GetInputMethod())
+    GetInputMethod()->SetFocusedTextInputClient(GetTextInputClient());
+
   View::OnFocus();
   // Border renders differently when focused.
   SchedulePaint();
 }
 
 void Combobox::OnBlur() {
-  GetInputMethod()->OnBlur();
+  if (GetTextInputClient() && GetInputMethod())
+    GetInputMethod()->DetachTextInputClient(GetTextInputClient());
+
   if (selector_)
     selector_->OnViewBlur();
   // Border renders differently when focused.