[chromedriver] Add page loading strategy to capabilities

chrome/test/chromedriver/chrome/chrome.h

Index: chrome/test/chromedriver/chrome/chrome.h
diff --git a/chrome/test/chromedriver/chrome/chrome.h b/chrome/test/chromedriver/chrome/chrome.h
index a0957dfbaecc18b629e2adfe1d14a3747310fca4..ad7c1ce334392aaf7fdc1f93a1491080256dd139 100644
--- a/chrome/test/chromedriver/chrome/chrome.h
+++ b/chrome/test/chromedriver/chrome/chrome.h
@@ -47,6 +47,10 @@ class Chrome {
   // actions can be performed on it.
   virtual bool HasTouchScreen() const = 0;
 
+  virtual std::string GetPageLoadingStrategy() const = 0;
+
+  virtual Status SetPageLoadingStrategy(std::string strategy) = 0;
+
   // Quits Chrome.
   virtual Status Quit() = 0;
 };