Translate: browser test for Chrome Translate in an isolated world

chrome/renderer/translate/translate_helper.cc

Index: chrome/renderer/translate/translate_helper.cc
diff --git a/chrome/renderer/translate/translate_helper.cc b/chrome/renderer/translate/translate_helper.cc
index 8cfc5e3b457692e53294109e90f298361db12b34..3202301dc158a53716d1da0e6c8af697c9ed9663 100644
--- a/chrome/renderer/translate/translate_helper.cc
+++ b/chrome/renderer/translate/translate_helper.cc
@@ -357,9 +357,16 @@ void TranslateHelper::OnTranslatePage(int page_id,
         chrome::ISOLATED_WORLD_ID_TRANSLATE,
         WebString::fromUTF8(kContentSecurityPolicy));
 
+    const char* security_origin = kSecurityOrigin;
+    CommandLine* command_line = CommandLine::ForCurrentProcess();
+    if (command_line->HasSwitch(switches::kTranslateSecurityOrigin)) {
+      std::string alternative = command_line->GetSwitchValueASCII(
+          switches::kTranslateSecurityOrigin);
+      security_origin = alternative.c_str();
+    }
     frame->setIsolatedWorldSecurityOrigin(
         chrome::ISOLATED_WORLD_ID_TRANSLATE,
-        WebSecurityOrigin::create(GURL(kSecurityOrigin)));
+        WebSecurityOrigin::create(GURL(security_origin)));
   }
 
   if (!IsTranslateLibAvailable()) {