Handle hosted apps consistently in --isolate-extensions.

chrome/browser/site_details_browsertest.cc

Index: chrome/browser/site_details_browsertest.cc
diff --git a/chrome/browser/site_details_browsertest.cc b/chrome/browser/site_details_browsertest.cc
index 29a72eca2f1e879f14ca086e7e3ed4d1ed81ece0..43c955aa0f0f5007af8564410da1e946e5ba7c07 100644
--- a/chrome/browser/site_details_browsertest.cc
+++ b/chrome/browser/site_details_browsertest.cc
@@ -771,7 +771,5 @@ IN_PROC_BROWSER_TEST_F(SiteDetailsBrowserTest, IsolateExtensionsHostedApps) {
                   "SiteIsolation.IsolateExtensionsProcessCountNoLimit"),
               ElementsAre(Bucket(2, 1)));
 
-  // TODO(nick): http://crbug.com/535073 ought to mean that the next line is 2.
-  // But it's actually 1. Figure out why.
-  EXPECT_THAT(GetRenderProcessCount(), EqualsIfExtensionsIsolated(1));
+  EXPECT_THAT(GetRenderProcessCount(), EqualsIfExtensionsIsolated(2));
 }