[chromedriver] Add page loading strategy to capabilities

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 513044a135a6075e6932e5948dac9a921707d756..b08e7e2bd9098cce5a650bf7decfb1c8171c97a9 100644
--- a/chrome/test/chromedriver/chrome/stub_chrome.cc
+++ b/chrome/test/chromedriver/chrome/stub_chrome.cc
@@ -50,6 +50,12 @@ bool StubChrome::HasTouchScreen() const {
   return false;
 }
 
+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);
 }