Get rid of a dependency on MessageLoop::DestructionObserver....

webkit/tools/test_shell/simple_resource_loader_bridge.cc

Index: webkit/tools/test_shell/simple_resource_loader_bridge.cc
===================================================================
--- webkit/tools/test_shell/simple_resource_loader_bridge.cc	(revision 65856)
+++ webkit/tools/test_shell/simple_resource_loader_bridge.cc	(working copy)
@@ -109,7 +109,7 @@
 }
 
 TestShellRequestContextParams* g_request_context_params = NULL;
-URLRequestContext* g_request_context = NULL;
+TestShellRequestContext* g_request_context = NULL;
 base::Thread* g_cache_thread = NULL;
 
 //-----------------------------------------------------------------------------
@@ -144,17 +144,19 @@
     SimpleAppCacheSystem::InitializeOnIOThread(g_request_context);
     SimpleSocketStreamBridge::InitializeOnIOThread(g_request_context);
     SimpleFileWriter::InitializeOnIOThread(g_request_context);
+    TestShellWebBlobRegistryImpl::InitializeOnIOThread(
+        g_request_context->blob_storage_controller());
 
-    TestShellWebBlobRegistryImpl::InitializeOnIOThread(
-        static_cast<TestShellRequestContext*>(g_request_context)->
-            blob_storage_controller());
     URLRequest::RegisterProtocolFactory("blob", &BlobURLRequestJobFactory);
   }
 
   virtual void CleanUp() {
-    SimpleSocketStreamBridge::Cleanup();
+    // In reverse order of initialization.
     TestShellWebBlobRegistryImpl::Cleanup();
     SimpleFileWriter::CleanupOnIOThread();
+    SimpleSocketStreamBridge::Cleanup();
+    SimpleAppCacheSystem::CleanupOnIOThread();
+
     if (g_request_context) {
       g_request_context->Release();
       g_request_context = NULL;