Media Galleries: Add more tests for media gallery names.

chrome/browser/media_gallery/scoped_mtp_device_map_entry.cc

Index: chrome/browser/media_gallery/scoped_mtp_device_map_entry.cc
===================================================================
--- chrome/browser/media_gallery/scoped_mtp_device_map_entry.cc	(revision 174038)
+++ chrome/browser/media_gallery/scoped_mtp_device_map_entry.cc	(working copy)
@@ -25,7 +25,7 @@
   return pool->IsRunningSequenceOnCurrentThread(media_sequence_token);
 }
 
-base::SequencedTaskRunner* GetSequencedTaskRunner() {
+scoped_refptr<base::SequencedTaskRunner> GetSequencedTaskRunner() {

[Lei Zhang, 2012/12/20 01:33:55]

If I don't do this, I get a crash in debug mode:

FATAL:ref_counted.cc(74)] Check failed: !in_dtor_.

#0  base::debug::BreakDebugger() ../../base/debug/debugger_posix.cc:256
#1  logging::LogMessage::~LogMessage (this=0x7fffffffc5d0, __in_chrg=<optimized
out>) at ../../base/logging.cc:649
#2  base::subtle::RefCountedThreadSafeBase::AddRef (this=0x7fffe8ee0578) at
../../base/memory/ref_counted.cc:74
#3  base::RefCountedThreadSafe<base::TaskRunner, base::TaskRunnerTraits>::AddRef
(this=0x7fffe8ee0578) at ../../base/memory/ref_counted.h:137
#4  scoped_refptr<base::SequencedTaskRunner>::scoped_refptr
(this=0x7fffffffc830, p=0x7fffe8ee0570) at ../../base/memory/ref_counted.h:234
#5  chrome::ScopedMTPDeviceMapEntry::ScopedMTPDeviceMapEntry
(this=0x7fffe8ee0630, device_location="/mtp_bogus", on_destruction_callback=...)
at ../../chrome/browser/media_gallery/scoped_mtp_device_map_entry.cc:47

   base::SequencedWorkerPool* pool = content::BrowserThread::GetBlockingPool();
   base::SequencedWorkerPool::SequenceToken media_sequence_token =
       pool->GetNamedSequenceToken(fileapi::kMediaTaskRunnerName);