WebView: add all APKs to asset path.

If there are multiple APKs as part of the WebView implementation (due to
splits, shared libraries, or overlays) add them all to the asset path,
instead of just the base APK.

Bug: 124116212
Test: manually tested with modified Trichrome build
Change-Id: I912e741b6de3154f66e5e82c9cf7154c6d39b1a4
1 file changed