Force delegated renderer on Aura

chrome/browser/apps/web_view_browsertest.cc

Index: chrome/browser/apps/web_view_browsertest.cc
diff --git a/chrome/browser/apps/web_view_browsertest.cc b/chrome/browser/apps/web_view_browsertest.cc
index 0b3395e8aae8f9ddc37ae09578063565e41c8f56..7e7ff8c0121a4f55240d22bd706a7cbb8e35a9ca 100644
--- a/chrome/browser/apps/web_view_browsertest.cc
+++ b/chrome/browser/apps/web_view_browsertest.cc
@@ -232,6 +232,9 @@ class WebViewTest : public extensions::PlatformAppBrowserTest {
           fake_speech_recognition_manager_.get());
     }
 
+    // We need real contexts, otherwise the embedder doesn't composite, but the
+    // guest does, and that isn't an expected configuration.
+    UseRealGLContexts();
     extensions::PlatformAppBrowserTest::SetUp();
   }