hasReleasedMailbox  180 Source/platform/graphics/Canvas2DLayerBridge.cpp     return !m_destructionInProgress && (hasReleasedMailbox() || bytesAllocated());
hasReleasedMailbox  285 Source/platform/graphics/Canvas2DLayerBridge.cpp     return hasReleasedMailbox() && m_framesSinceMailboxRelease > 2;
hasReleasedMailbox  290 Source/platform/graphics/Canvas2DLayerBridge.cpp     return hasReleasedMailbox() ? &m_mailboxes[m_releasedMailboxInfoIndex] : 0;
hasReleasedMailbox   90 Source/platform/graphics/Canvas2DLayerBridge.h     bool hasReleasedMailbox() const;