Rename shell namespace to service_manager

components/filesystem/files_test_base.h

Index: components/filesystem/files_test_base.h
diff --git a/components/filesystem/files_test_base.h b/components/filesystem/files_test_base.h
index 7996c98d1b17bebe0dc7811e3a64ee9eecfb7007..d77acda06c2f3768d588688fa077d56a3a259798 100644
--- a/components/filesystem/files_test_base.h
+++ b/components/filesystem/files_test_base.h
@@ -37,12 +37,12 @@ base::Callback<void(T1, T2, T3)> Capture(T1* t1, T2* t2, T3* t3) {
   return base::Bind(&DoCaptures<T1, T2, T3>, t1, t2, t3);
 }
 
-class FilesTestBase : public shell::test::ServiceTest {
+class FilesTestBase : public service_manager::test::ServiceTest {
  public:
   FilesTestBase();
   ~FilesTestBase() override;
 
-  // Overridden from shell::test::ServiceTest:
+  // Overridden from service_manager::test::ServiceTest:
   void SetUp() override;
 
  protected: