Remove toolbar from extension windows in streamlined hosted apps mode.

Previously, extension windows would have the chrome toolbar. This CL
prevents child app windows from getting a toolbar in streamlined
hosted apps mode which fixes this issue.

BUG=318607

Review URL: https://codereview.chromium.org/112623003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@243757 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/ui/browser.cc

@@ -2163,9 +2163,12 @@ bool Browser::SupportsWindowFeatureImpl(WindowFeature feature,
     if (is_type_tabbed())
       features |= FEATURE_TOOLBAR;
 
-    if (!is_app() || CommandLine::ForCurrentProcess()->HasSwitch(
-                         switches::kEnableStreamlinedHostedApps))
+    if (!is_app() || ((app_type() == APP_TYPE_HOST ||
+                       app_name() == DevToolsWindow::kDevToolsApp) &&
+                      CommandLine::ForCurrentProcess()->HasSwitch(
+                          switches::kEnableStreamlinedHostedApps))) {
       features |= FEATURE_LOCATIONBAR;
+    }
   }
   return !!(features & feature);
 }