Introduce abstractions to allow embedders to test RenderViewHost

chrome/browser/web_applications/web_app_unittest.cc

Index: chrome/browser/web_applications/web_app_unittest.cc
diff --git a/chrome/browser/web_applications/web_app_unittest.cc b/chrome/browser/web_applications/web_app_unittest.cc
index f41ac0d5da7cacd08d335f0e6407f7ddaa9f6ed3..41bc964c826a02319b11eebb78f9ee5515eef589 100644
--- a/chrome/browser/web_applications/web_app_unittest.cc
+++ b/chrome/browser/web_applications/web_app_unittest.cc
@@ -12,6 +12,7 @@
 #include "chrome/common/extensions/extension_messages.h"
 #include "chrome/test/base/testing_profile.h"
 #include "content/test/test_browser_thread.h"
+#include "content/test/test_renderer_host.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 using content::BrowserThread;
@@ -34,7 +35,7 @@ TEST_F(WebApplicationTest, GetShortcutInfoForTab) {
   web_app_info.description = description;
   web_app_info.app_url = url;
 
-  rvh()->TestOnMessageReceived(
+  rvh_tester()->TestOnMessageReceived(
       ExtensionHostMsg_DidGetApplicationInfo(0, 0, web_app_info));
   ShellIntegration::ShortcutInfo info;
   web_app::GetShortcutInfoForTab(contents_wrapper(), &info);