Introduce WebInputMethodController to blink

components/test_runner/text_input_controller.h

Index: components/test_runner/text_input_controller.h
diff --git a/components/test_runner/text_input_controller.h b/components/test_runner/text_input_controller.h
index d7d29586b2effcc2b88bc66a09de5b67d4bb16b1..d9eec8a7a859b00404945b5dc042e2a43ae326bc 100644
--- a/components/test_runner/text_input_controller.h
+++ b/components/test_runner/text_input_controller.h
@@ -12,6 +12,7 @@
 #include "base/memory/weak_ptr.h"
 
 namespace blink {
+class WebInputMethodController;
 class WebLocalFrame;
 class WebView;
 }
@@ -43,8 +44,11 @@ class TextInputController {
   std::vector<int> FirstRectForCharacterRange(unsigned location,
                                               unsigned length);
   void SetComposition(const std::string& text);
+  void ForceTextInputStateUpdate();
 
   blink::WebView* view();
+  blink::WebInputMethodController* inputMethodController();
+
   WebViewTestProxyBase* web_view_test_proxy_base_;
 
   base::WeakPtrFactory<TextInputController> weak_factory_;