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 af332fbfa27b32db1b85c64ac2ed73ac1a6c8c07..53d28bc0610f5c85f4e6adcb3b5e2441e1687e97 100644
--- a/ui/views/controls/combobox/combobox.cc
+++ b/ui/views/controls/combobox/combobox.cc
@@ -8,6 +8,7 @@
 #include "base/logging.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"
@@ -32,7 +33,6 @@
 #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/resources/grit/views_resources.h"
@@ -335,12 +335,6 @@ void Combobox::SetInvalid(bool invalid) {
   SchedulePaint();
 }
 
-ui::TextInputClient* Combobox::GetTextInputClient() {
-  if (!selector_)
-    selector_.reset(new PrefixSelector(this));
-  return selector_.get();
-}
-
 void Combobox::Layout() {
   PrefixDelegate::Layout();
 
@@ -540,14 +534,18 @@ void Combobox::OnPaint(gfx::Canvas* canvas) {
 }
 
 void Combobox::OnFocus() {
-  GetInputMethod()->OnFocus();
+  if (GetInputMethod())
+    GetInputMethod()->SetFocusedTextInputClient(GetPrefixSelector());
+
   View::OnFocus();
   // Border renders differently when focused.
   SchedulePaint();
 }
 
 void Combobox::OnBlur() {
-  GetInputMethod()->OnBlur();
+  if (GetInputMethod())
+    GetInputMethod()->DetachTextInputClient(GetPrefixSelector());
+
   if (selector_)
     selector_->OnViewBlur();
   // Border renders differently when focused.
@@ -865,4 +863,10 @@ gfx::Size Combobox::ArrowSize() const {
                                              ignored);
 }
 
+PrefixSelector* Combobox::GetPrefixSelector() {
+  if (!selector_)
+    selector_.reset(new PrefixSelector(this));
+  return selector_.get();
+}
+
 }  // namespace views