Remove the 2-level input method system & InputMethodBridge.

ui/views/cocoa/bridged_native_widget.mm

Index: ui/views/cocoa/bridged_native_widget.mm
diff --git a/ui/views/cocoa/bridged_native_widget.mm b/ui/views/cocoa/bridged_native_widget.mm
index c5fa0a2c5ca7cb9376e0e21eead05b14dd0d8cd8..530603972c08927ca835caef0d7663d3d7657e59 100644
--- a/ui/views/cocoa/bridged_native_widget.mm
+++ b/ui/views/cocoa/bridged_native_widget.mm
@@ -25,8 +25,6 @@
 #include "ui/views/cocoa/tooltip_manager_mac.h"
 #import "ui/views/cocoa/views_nswindow_delegate.h"
 #import "ui/views/cocoa/widget_owner_nswindow_adapter.h"
-#include "ui/views/ime/input_method_bridge.h"
-#include "ui/views/ime/null_input_method.h"
 #include "ui/views/view.h"
 #include "ui/views/views_delegate.h"
 #include "ui/views/widget/native_widget_mac.h"
@@ -707,15 +705,12 @@ void BridgedNativeWidget::OnSizeConstraintsChanged() {
                                     shows_fullscreen_controls);
 }
 
-InputMethod* BridgedNativeWidget::CreateInputMethod() {
-  return new InputMethodBridge(this, GetHostInputMethod(), true);
-}
-
-ui::InputMethod* BridgedNativeWidget::GetHostInputMethod() {
+ui::InputMethod* BridgedNativeWidget::GetInputMethod() {
   if (!input_method_) {
     // Delegate is NULL because Mac IME does not need DispatchKeyEventPostIME
     // callbacks.
     input_method_ = ui::CreateInputMethod(NULL, nil);
+    input_method_->OnFocus();
   }
   return input_method_.get();
 }
@@ -755,16 +750,6 @@ void BridgedNativeWidget::CreateLayer(ui::LayerType layer_type,
 }
 
 ////////////////////////////////////////////////////////////////////////////////
-// BridgedNativeWidget, internal::InputMethodDelegate:
-
-void BridgedNativeWidget::DispatchKeyEventPostIME(const ui::KeyEvent& key) {
-  DCHECK(focus_manager_);
-  native_widget_mac_->GetWidget()->OnKeyEvent(const_cast<ui::KeyEvent*>(&key));
-  if (!key.handled())
-    focus_manager_->OnKeyEvent(key);
-}
-
-////////////////////////////////////////////////////////////////////////////////
 // BridgedNativeWidget, CocoaMouseCaptureDelegate:
 
 void BridgedNativeWidget::PostCapturedEvent(NSEvent* event) {