Revert restartInput change off the M57 release branch.

content/renderer/render_widget.cc

Index: content/renderer/render_widget.cc
diff --git a/content/renderer/render_widget.cc b/content/renderer/render_widget.cc
index 57ef1fb90bad3bf8d681a5194445d16e7458c742..ac6f63108036e4bde831e5d6b142cfd7052e4c6e 100644
--- a/content/renderer/render_widget.cc
+++ b/content/renderer/render_widget.cc
@@ -1030,14 +1030,6 @@ void RenderWidget::ShowVirtualKeyboard() {
   UpdateTextInputStateInternal(true, false);
 }
 
-void RenderWidget::ClearTextInputState() {
-  text_input_info_ = blink::WebTextInputInfo();
-  text_input_type_ = ui::TextInputType::TEXT_INPUT_TYPE_NONE;
-  text_input_mode_ = ui::TextInputMode::TEXT_INPUT_MODE_DEFAULT;
-  can_compose_inline_ = false;
-  text_input_flags_ = 0;
-}
-
 void RenderWidget::UpdateTextInputState() {
   UpdateTextInputStateInternal(false, false);
 }
@@ -2099,6 +2091,13 @@ blink::WebScreenInfo RenderWidget::screenInfo() {
   return web_screen_info;
 }
 
+void RenderWidget::resetInputMethod() {
+  ImeEventGuard guard(this);
+  Send(new InputHostMsg_ImeCancelComposition(routing_id()));
+
+  UpdateCompositionInfo(false /* not an immediate request */);
+}
+
 #if defined(OS_ANDROID)
 void RenderWidget::showUnhandledTapUIIfNeeded(
     const WebPoint& tapped_position,