mash: Change CastConfigDelegate to a mojoified CastConfigClient.

chrome/browser/apps/app_browsertest_util.h

Index: chrome/browser/apps/app_browsertest_util.h
diff --git a/chrome/browser/apps/app_browsertest_util.h b/chrome/browser/apps/app_browsertest_util.h
index 5730ce5884cc58ed0aa5f296f3defa2131a89509..195a2a9ce157ab92ea8d0a855c15e6a33f7a506b 100644
--- a/chrome/browser/apps/app_browsertest_util.h
+++ b/chrome/browser/apps/app_browsertest_util.h
@@ -11,6 +11,10 @@
 #include "chrome/browser/extensions/extension_apitest.h"
 #include "extensions/browser/app_window/app_window.h"
 
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/media/router/mock_media_router.h"
+#endif
+
 namespace base {
 class CommandLine;
 }
@@ -31,6 +35,8 @@ class PlatformAppBrowserTest : public ExtensionApiTest {
   PlatformAppBrowserTest();
 
   void SetUpCommandLine(base::CommandLine* command_line) override;
+  void SetUpInProcessBrowserTestFixture() override;
+  void TearDownInProcessBrowserTestFixture() override;
 
   // Gets the first app window that is found for a given browser.
   static AppWindow* GetFirstAppWindowForBrowser(Browser* browser);
@@ -117,6 +123,10 @@ class PlatformAppBrowserTest : public ExtensionApiTest {
   AppWindow* CreateTestAppWindow(const std::string& window_create_options);
 
  private:
+#if defined(OS_CHROMEOS)
+  media_router::MockMediaRouter media_router_;
+#endif
+
   DISALLOW_COPY_AND_ASSIGN(PlatformAppBrowserTest);
 };