rb - revert back to js for w3c page source

Author: titusfortner

rb/build.desc

@@ -243,7 +243,7 @@ ruby_test(name = "remote-ie",
 ruby_test(name = "remote-edge",
   srcs = [
     "spec/integration/selenium/webdriver/*_spec.rb",
-    "spec/integration/selenium/webdriver/ie/**/*_spec.rb",
+    "spec/integration/selenium/webdriver/edge/**/*_spec.rb",
     "spec/integration/selenium/webdriver/remote/**/*_spec.rb"
   ],
   include = ["rb/spec/integration", "build/rb/lib"],

rb/lib/selenium/webdriver/remote/w3c_bridge.rb

@@ -194,7 +194,9 @@ def title
         end
 
         def page_source
-          execute :getPageSource
+          execute_script('var source = document.documentElement.outerHTML;' \
+                            'if (!source) { source = new XMLSerializer().serializeToString(document); }' \
+                            'return source;')
         end
 
         def switch_to_window(name)