Update Linux to use scoped_refptr<T>::get() rather than implicit "operator T*"

content/browser/fileapi/fileapi_message_filter_unittest.cc

 // Copyright 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/fileapi/fileapi_message_filter.h"
 
 #include <string>
 #include <vector>
 
 #include "base/memory/ref_counted.h"
@@ skipping 49 matching lines @@
   const GURL kUrl("blob:foobar");
   const GURL kDifferentUrl("blob:barfoo");
   const std::string kContentType = "fake/type";
 
   EXPECT_EQ(NULL, controller->GetBlobDataFromUrl(kUrl));
 
   // Test via OnMessageReceived(const IPC::Message&) which is called by the
   // channel proxy. Since OnMessageReceived is hidden on FileAPIMessageFilter,
   // cast it.
   IPC::ChannelProxy::MessageFilter* casted_filter =
-      static_cast<IPC::ChannelProxy::MessageFilter*>(filter);
+      static_cast<IPC::ChannelProxy::MessageFilter*>(filter.get());
 
   BlobHostMsg_StartBuildingBlob start_message(kUrl);
   EXPECT_TRUE(casted_filter->OnMessageReceived(start_message));
 
   // Blob is still being built. Nothing should be returned.
   EXPECT_EQ(NULL, controller->GetBlobDataFromUrl(kUrl));
 
   BlobHostMsg_FinishBuildingBlob finish_message(kUrl, kContentType);
   EXPECT_TRUE(casted_filter->OnMessageReceived(finish_message));
 
   // Now, Blob is built.
   webkit_blob::BlobData* blob_data = controller->GetBlobDataFromUrl(kUrl);
   ASSERT_FALSE(blob_data == NULL);
   EXPECT_EQ(0U, blob_data->items().size());
   EXPECT_EQ(kContentType, blob_data->content_type());
 
   // Nothing should be returned for a URL we didn't use.
   EXPECT_TRUE(controller->GetBlobDataFromUrl(kDifferentUrl) == NULL);
 }
 
 }  // namespace fileapi