Modify RoiPooling to use OperationResolver and support float16.

Bug: 118608492
Test: NeuralNetworksTest_static
Change-Id: I164c58c8105ef8ceed23144423b472d586faa8c9
Merged-In: I164c58c8105ef8ceed23144423b472d586faa8c9
(cherry picked from commit b14b6166078db0092eff2d46ee4a7ee0c63c7d8c)
15 files changed