Initial skeleton for System Indicator API

chrome/browser/extensions/api/system_indicator/system_indicator_apitest.cc

Index: chrome/browser/extensions/api/system_indicator/system_indicator_apitest.cc
diff --git a/chrome/browser/extensions/shadow_dom_apitest.cc b/chrome/browser/extensions/api/system_indicator/system_indicator_apitest.cc
similarity index 67%
copy from chrome/browser/extensions/shadow_dom_apitest.cc
copy to chrome/browser/extensions/api/system_indicator/system_indicator_apitest.cc
index f53d5d41780e7edfc2c452ab36bd0f766477efae..9b11502b3e6f30d017cb283187c9ade0c6b3b651 100644
--- a/chrome/browser/extensions/shadow_dom_apitest.cc
+++ b/chrome/browser/extensions/api/system_indicator/system_indicator_apitest.cc
@@ -6,10 +6,8 @@
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "chrome/common/chrome_switches.h"
 
-IN_PROC_BROWSER_TEST_F(ExtensionApiTest, ShadowDom) {
-  // Shadow DOM is exposed to extensions with the experimental permission only.
+IN_PROC_BROWSER_TEST_F(ExtensionApiTest, SystemIndicator) {
   CommandLine::ForCurrentProcess()->AppendSwitch(
       switches::kEnableExperimentalExtensionApis);
-
-  ASSERT_TRUE(RunExtensionTest("shadow_dom")) << message_;
+  ASSERT_TRUE(RunExtensionTest("system_indicator")) << message_;
 }