Update defaults for InstantExtended.

chrome/browser/profiles/profile_manager_unittest.cc

Index: chrome/browser/profiles/profile_manager_unittest.cc
diff --git a/chrome/browser/profiles/profile_manager_unittest.cc b/chrome/browser/profiles/profile_manager_unittest.cc
index 87dd48894c9064ec5d641d57b712ffcb981da9eb..7621369dccaa6f3241512b7d8244e7c14ab5296c 100644
--- a/chrome/browser/profiles/profile_manager_unittest.cc
+++ b/chrome/browser/profiles/profile_manager_unittest.cc
@@ -35,6 +35,7 @@
 #include "chrome/test/base/testing_profile.h"
 #include "content/public/browser/notification_service.h"
 #include "content/public/test/test_browser_thread_bundle.h"
+#include "content/public/test/test_renderer_host.h"
 #include "testing/gmock/include/gmock/gmock.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
@@ -101,8 +102,8 @@ class ProfileManagerTest : public testing::Test {
         new UnittestProfileManager(temp_dir_.path()));
 
 #if defined(OS_CHROMEOS)
-  CommandLine* cl = CommandLine::ForCurrentProcess();
-  cl->AppendSwitch(switches::kTestType);
+    CommandLine* cl = CommandLine::ForCurrentProcess();
+    cl->AppendSwitch(switches::kTestType);
 #endif
   }
 
@@ -138,6 +139,9 @@ class ProfileManagerTest : public testing::Test {
 #if defined(OS_CHROMEOS)
   chromeos::ScopedTestUserManager test_user_manager_;
 #endif
+
+  // The existence of this object enables tests via RenderViewHostTester.
+  content::RenderViewHostTestEnabler rvh_test_enabler_;

[Jered, 2013/10/02 16:04:56]

Why do we need to change this test that looks totally unrelated to
InstantExtended? Is it because we do something in InstantService that requires a
knowledge of render processes or something?

I'm just thinking it might suck if anyone who wants to write a new unit test
that uses a profile or similar has to do this from now on.

[samarth, 2013/10/02 16:31:12]

The root cause is tests that start a new Browser which kicks off prerendering of
the Instant NTP.  If you don't have the test RVH, this eventually runs into
trouble while loading the page.

If you're using BrowserWithTestWindowTest, this test scaffolding comes for free
and most tests do that, but some don't and instantiate their own Browser
instances. So for now they need to also include this.

 };
 
 TEST_F(ProfileManagerTest, GetProfile) {