Remove unneeded code from WebTestProxyBase.

components/test_runner/test_interfaces.cc

Index: components/test_runner/test_interfaces.cc
diff --git a/components/test_runner/test_interfaces.cc b/components/test_runner/test_interfaces.cc
index ee0d34f103c133ff26f2c19d1e9d61ff055c1405..3e7d65f156b1efa3bde31db06c8089a5e78e96ae 100644
--- a/components/test_runner/test_interfaces.cc
+++ b/components/test_runner/test_interfaces.cc
@@ -58,7 +58,6 @@ TestInterfaces::~TestInterfaces() {
 
 void TestInterfaces::SetWebView(blink::WebView* web_view,
                                 WebTestProxyBase* proxy) {
-  proxy_ = proxy;
   accessibility_controller_->SetWebView(web_view);
   event_sender_->SetWebView(web_view);
   // gamepad_controller_ doesn't depend on WebView.
@@ -169,10 +168,6 @@ WebTestDelegate* TestInterfaces::GetDelegate() {
   return delegate_;
 }
 
-WebTestProxyBase* TestInterfaces::GetProxy() {
-  return proxy_;
-}
-
 const std::vector<WebTestProxyBase*>& TestInterfaces::GetWindowList() {
   return window_list_;
 }