Use correct WebView from TextInputController.

components/test_runner/web_test_proxy.cc

Index: components/test_runner/web_test_proxy.cc
diff --git a/components/test_runner/web_test_proxy.cc b/components/test_runner/web_test_proxy.cc
index 93f2a3779a2dc9129dea6cef42bbd3f4284b7a4d..83429eadff8de04099f4825b95cd72b99fbe7afa 100644
--- a/components/test_runner/web_test_proxy.cc
+++ b/components/test_runner/web_test_proxy.cc
@@ -11,6 +11,7 @@
 #include "components/test_runner/mock_screen_orientation_client.h"
 #include "components/test_runner/test_interfaces.h"
 #include "components/test_runner/test_runner.h"
+#include "components/test_runner/text_input_controller.h"
 #include "components/test_runner/web_test_delegate.h"
 #include "components/test_runner/web_test_interfaces.h"
 
@@ -21,7 +22,8 @@ WebTestProxyBase::WebTestProxyBase()
       delegate_(nullptr),
       web_view_(nullptr),
       web_widget_(nullptr),
-      event_sender_(new EventSender(this)) {}
+      event_sender_(new EventSender(this)),
+      text_input_controller_(new TextInputController(this)) {}
 
 WebTestProxyBase::~WebTestProxyBase() {
   test_interfaces_->WindowClosed(this);
@@ -38,10 +40,12 @@ void WebTestProxyBase::SetSendWheelGestures(bool send_gestures) {
 
 void WebTestProxyBase::Reset() {
   event_sender_->Reset();
+  // text_input_controller_ doesn't have any state to reset.
 }
 
 void WebTestProxyBase::BindTo(blink::WebLocalFrame* frame) {
   event_sender_->Install(frame);
+  text_input_controller_->Install(frame);
 }
 
 void WebTestProxyBase::GetScreenOrientationForTesting(