Remove the 2-level input method system & InputMethodBridge.

ui/views/controls/tree/tree_view.cc

Index: ui/views/controls/tree/tree_view.cc
diff --git a/ui/views/controls/tree/tree_view.cc b/ui/views/controls/tree/tree_view.cc
index e3e6194e37dc52d3e3dbf5a6f799efdc1bf2cd07..a59d46fc0a9ea758e318466024b8405b26467de0 100644
--- a/ui/views/controls/tree/tree_view.cc
+++ b/ui/views/controls/tree/tree_view.cc
@@ -9,6 +9,7 @@
 #include "base/i18n/rtl.h"
 #include "base/message_loop/message_loop.h"
 #include "ui/accessibility/ax_view_state.h"
+#include "ui/base/ime/input_method.h"
 #include "ui/base/resource/resource_bundle.h"
 #include "ui/events/event.h"
 #include "ui/events/keycodes/keyboard_codes.h"
@@ -23,7 +24,6 @@
 #include "ui/views/controls/scroll_view.h"
 #include "ui/views/controls/textfield/textfield.h"
 #include "ui/views/controls/tree/tree_view_controller.h"
-#include "ui/views/ime/input_method.h"
 
 using ui::TreeModel;
 using ui::TreeModelNode;
@@ -98,6 +98,8 @@ TreeView::~TreeView() {
     focus_manager_->RemoveFocusChangeListener(this);
     focus_manager_ = NULL;
   }
+  if (GetTextInputClient() && GetInputMethod())

[yukawa, 2015/06/11 21:48:43]

ditto for clean-up code.

[Shu Chen, 2015/06/12 03:34:38]

Ditto.

+    GetInputMethod()->DetachTextInputClient(GetTextInputClient());
 }
 
 View* TreeView::CreateParentIfNecessary() {
@@ -617,17 +619,19 @@ void TreeView::OnPaint(gfx::Canvas* canvas) {
 }
 
 void TreeView::OnFocus() {
-  GetInputMethod()->OnFocus();
+  if (GetInputMethod())
+    GetInputMethod()->SetFocusedTextInputClient(GetTextInputClient());
   View::OnFocus();
   SchedulePaintForNode(selected_node_);
 
   // Notify the InputMethod so that it knows to query the TextInputClient.
   if (GetInputMethod())
-    GetInputMethod()->OnCaretBoundsChanged(this);
+    GetInputMethod()->OnCaretBoundsChanged(GetTextInputClient());
 }
 
 void TreeView::OnBlur() {
-  GetInputMethod()->OnBlur();
+  if (GetInputMethod())
+    GetInputMethod()->DetachTextInputClient(GetTextInputClient());
   SchedulePaintForNode(selected_node_);
   if (selector_)
     selector_->OnViewBlur();