[chromedriver] Remove unnecessary round trips to Chrome.

chrome/test/chromedriver/chrome/stub_chrome.cc

Index: chrome/test/chromedriver/chrome/stub_chrome.cc
diff --git a/chrome/test/chromedriver/chrome/stub_chrome.cc b/chrome/test/chromedriver/chrome/stub_chrome.cc
index cdae88a8b330df32fa665d423e7a717e14264272..4e93bb22aa4b7371f56b59f875aa15601d5fc808 100644
--- a/chrome/test/chromedriver/chrome/stub_chrome.cc
+++ b/chrome/test/chromedriver/chrome/stub_chrome.cc
@@ -30,20 +30,6 @@ Status StubChrome::CloseWebView(const std::string& id) {
   return Status(kOk);
 }
 
-Status StubChrome::IsJavaScriptDialogOpen(bool* is_open) {
-  return Status(kOk);
-}
-
-Status StubChrome::GetJavaScriptDialogMessage(std::string* message) {
-  return Status(kOk);
-}
-
-Status StubChrome::HandleJavaScriptDialog(
-    bool accept,
-    const std::string* prompt_text) {
-  return Status(kOk);
-}
-
 Status StubChrome::GetAutomationExtension(AutomationExtension** extension) {
   return Status(kOk);
 }