Oilpan: Add GC_PLUGIN_IGNORE to ResourcePtr::m_resource
Oilpan: Add GC_PLUGIN_IGNORE to ResourcePtr::m_resource

The raw pointer is OK, because the lifetime of the Resource object is explicitly
managed by reference counting. (Ideally we want to remove the reference counting
by tracing the ResourcePtrs though.)

BUG=509911

Review URL: https://codereview.chromium.org/1257123002

git-svn-id: bf5cd6ccde378db821296732a091cfbcf5285fbd@199562 bbb929c8-8fbe-4397-9dbb-9b2b20218538

axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk,axinging/chromium-crosswalk