[chromedriver] Set page load strategy via constructor rather than a setter.

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 d01420659532355155d4dc70e6ba973e443726c0..cdf641f8f8fb2e40efd6a75f5c5df5813abb1c34 100644
--- a/chrome/test/chromedriver/chrome/stub_chrome.cc
+++ b/chrome/test/chromedriver/chrome/stub_chrome.cc
@@ -58,8 +58,6 @@ std::string StubChrome::page_load_strategy() const {
   return std::string();
 }
 
-void StubChrome::set_page_load_strategy(std::string strategy) {}
-
 Status StubChrome::Quit() {
   return Status(kOk);
 }