[chromedriver] Add page loading strategy to capabilities

chrome/test/chromedriver/chrome/devtools_http_client.h

Index: chrome/test/chromedriver/chrome/devtools_http_client.h
diff --git a/chrome/test/chromedriver/chrome/devtools_http_client.h b/chrome/test/chromedriver/chrome/devtools_http_client.h
index b009d9efcf11a5249dd6bc4d40996aae0c18c393..93e55476bbd634ef976e493065c734b25d33a0a5 100644
--- a/chrome/test/chromedriver/chrome/devtools_http_client.h
+++ b/chrome/test/chromedriver/chrome/devtools_http_client.h
@@ -75,7 +75,8 @@ class DevToolsHttpClient {
                      scoped_refptr<URLRequestContextGetter> context_getter,
                      const SyncWebSocketFactory& socket_factory,
                      std::unique_ptr<DeviceMetrics> device_metrics,
-                     std::unique_ptr<std::set<WebViewInfo::Type>> window_types);
+                     std::unique_ptr<std::set<WebViewInfo::Type>> window_types,
+                     std::string page_load_strategy);
   ~DevToolsHttpClient();
 
   Status Init(const base::TimeDelta& timeout);
@@ -105,6 +106,7 @@ class DevToolsHttpClient {
   BrowserInfo browser_info_;
   std::unique_ptr<DeviceMetrics> device_metrics_;
   std::unique_ptr<std::set<WebViewInfo::Type>> window_types_;
+  std::string page_load_strategy_;
 
   DISALLOW_COPY_AND_ASSIGN(DevToolsHttpClient);
 };