Track Bitmap native allocations

Bug: 331243037
Flag: com.android.libcore.native_metrics

This CL will make use of the new API to create NativeAllocationRegistry
that associates with Bitmap.class if libcore.native_metrics is enabled
(otherwise falls back to the legacy API).

This allows tracking of native allocations that are Bitmap specific.

Change-Id: I2d2875eeaf2b1ab6d1a0419977390f31206ed560