Remove the CHECK in RenderWidget::GetInputMethodController

content/renderer/render_widget.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/renderer/render_widget.h"
 
 #include <memory>
 #include <utility>
 
 #include "base/auto_reset.h"
@@ skipping 2290 matching lines @@
                                      image.getSkBitmap(), imageOffset,
                                      possible_drag_event_info_));
 }
 
 blink::WebWidget* RenderWidget::GetWebWidget() const {
   return webwidget_internal_;
 }
 
 blink::WebInputMethodController* RenderWidget::GetInputMethodController()
     const {
-  // TODO(ekaramad): Remove this CHECK when GetWebWidget() is
-  // always a WebFrameWidget.
-  CHECK(GetWebWidget()->isWebFrameWidget());
+  if (!GetWebWidget()->isWebFrameWidget()) {
+    // TODO(ekaramad): We should not get here in response to IME IPC or updates
+    // when the RenderWidget is swapped out. We should top sending IPCs from the
+    // browser side (https://crbug.com/669219).
+    // If there is no WebFrameWidget, then there will be no
+    // InputMethodControllers for a WebLocalFrame.
+    return nullptr;
+  }
   return static_cast<blink::WebFrameWidget*>(GetWebWidget())
       ->getActiveWebInputMethodController();
 }
 
 }  // namespace content