IME for Mus: Remove OnTextInputModeChanged() from IME's mojo API.

chrome/browser/ui/views/ime_driver/input_method_bridge_chromeos.cc

Index: chrome/browser/ui/views/ime_driver/input_method_bridge_chromeos.cc
diff --git a/chrome/browser/ui/views/ime_driver/input_method_bridge_chromeos.cc b/chrome/browser/ui/views/ime_driver/input_method_bridge_chromeos.cc
index 522a5883168f6218c5adac49df2ef36acbcaa8e4..edf5fb9bf54b9eaa9be1151660e689f0182c12b9 100644
--- a/chrome/browser/ui/views/ime_driver/input_method_bridge_chromeos.cc
+++ b/chrome/browser/ui/views/ime_driver/input_method_bridge_chromeos.cc
@@ -16,12 +16,6 @@ InputMethodBridge::InputMethodBridge(ui::mojom::TextInputClientPtr client)
 
 InputMethodBridge::~InputMethodBridge() {}
 
-void InputMethodBridge::OnTextInputModeChanged(
-    ui::TextInputMode text_input_mode) {
-  // TODO(moshayedi): crbug.com/631527. Consider removing this, as
-  // ui::InputMethodChromeOS doesn't have this.
-}
-
 void InputMethodBridge::OnTextInputTypeChanged(
     ui::TextInputType text_input_type) {
   input_method_chromeos_->OnTextInputTypeChanged(client_.get());