Remove the 2-level input method system & InputMethodBridge.

content/browser/renderer_host/render_widget_host_view_aura.cc

Index: content/browser/renderer_host/render_widget_host_view_aura.cc
diff --git a/content/browser/renderer_host/render_widget_host_view_aura.cc b/content/browser/renderer_host/render_widget_host_view_aura.cc
index 6b03259e873c228a89b4854d4bc15c1b8e56aef7..eeb5ee3135cdb41009a8c70dbcef4b5292eb41da 100644
--- a/content/browser/renderer_host/render_widget_host_view_aura.cc
+++ b/content/browser/renderer_host/render_widget_host_view_aura.cc
@@ -1615,10 +1615,6 @@ void RenderWidgetHostViewAura::InsertChar(base::char16 ch, int flags) {
   }
 }
 
-gfx::NativeWindow RenderWidgetHostViewAura::GetAttachedWindow() const {
-  return window_;
-}
-
 ui::TextInputType RenderWidgetHostViewAura::GetTextInputType() const {
   return text_input_type_;
 }
@@ -2686,8 +2682,8 @@ void RenderWidgetHostViewAura::RemovingFromRootWindow() {
 
 void RenderWidgetHostViewAura::DetachFromInputMethod() {
   ui::InputMethod* input_method = GetInputMethod();
-  if (input_method && input_method->GetTextInputClient() == this)
-    input_method->SetFocusedTextInputClient(NULL);
+  if (input_method)
+    input_method->DetachTextInputClient(this);
 }
 
 void RenderWidgetHostViewAura::ForwardKeyboardEvent(