Avoid unnecessary text extraction for unsupported files

• Type: Task
• Status: Closed
• Priority: Minor
• Resolution: Completed
• Affects Version/s: None
• Fix Version/s: 7.2.10 DXP FP2, 7.2.10.1 DXP SP1, 7.2.X, Master
• Component/s: Image Auto Tagging
• Labels:
  • liferay-dxp-72-sp1
  • liferay-fixpack-dxp-2-7210
• Branch Version/s:
  7.2.x
• Backported to Branch:
  Committed
• Sprint: LIMA | #02 | Sep03-Sep17
• Git Pull Request: https://github.com/brianchandotcom/liferay-portal/pull/78283

At the moment we are extracting the text first and filtering by mime type afterwards. We could save us some work by filtering first and extracting later.