Implement GetBrowsingDataRemoverDelegate() for BrowserContext subclasses

chrome/test/base/testing_profile.h

Index: chrome/test/base/testing_profile.h
diff --git a/chrome/test/base/testing_profile.h b/chrome/test/base/testing_profile.h
index 5d9bd8a748a41176273dafb16a9e0dea4476b96a..bbe8ce1f72d4ff27b27bb8172ad0f4e7729522b5 100644
--- a/chrome/test/base/testing_profile.h
+++ b/chrome/test/base/testing_profile.h
@@ -245,6 +245,8 @@ class TestingProfile : public Profile {
   content::SSLHostStateDelegate* GetSSLHostStateDelegate() override;
   content::PermissionManager* GetPermissionManager() override;
   content::BackgroundSyncController* GetBackgroundSyncController() override;
+  content::BrowsingDataRemoverDelegate* GetBrowsingDataRemoverDelegate()
+      override;
   net::URLRequestContextGetter* CreateRequestContext(
       content::ProtocolHandlerMap* protocol_handlers,
       content::URLRequestInterceptorScopedVector request_interceptors) override;