Move fetching logic out of ApplicationManager, eliminate url mappings.

mojo/runner/shell_test_base.h

Index: mojo/runner/shell_test_base.h
diff --git a/mojo/runner/shell_test_base.h b/mojo/runner/shell_test_base.h
index f7471ae9d0d4ae89720e342fd8e29e61f1bb9024..b5560bca57114c1b1ed8c9837975663f458d9e33 100644
--- a/mojo/runner/shell_test_base.h
+++ b/mojo/runner/shell_test_base.h
@@ -42,13 +42,10 @@ class ShellTestBase : public testing::Test {
   }
 
   base::MessageLoop* message_loop() { return &message_loop_; }
-  Context* shell_context() { return &shell_context_; }
+  Context* shell_context() { return shell_context_.get(); }
 
  private:
-  // Set up the test applications so that mojo: URL resolves to those.
-  void SetUpTestApplications();
-
-  Context shell_context_;
+  scoped_ptr<Context> shell_context_;
   base::MessageLoop message_loop_;
 
   DISALLOW_COPY_AND_ASSIGN(ShellTestBase);