Revert "Vulkan: pipeline cache not populated as blob cache is not set" This reverts commit 134d6eed2a7d1f148a42c78c8e5da3cfc2df288e. Reason for revert: glmark2 is unable to start on Android-Q when using ANGLE as the driver. Original change's description: > Vulkan: pipeline cache not populated as blob cache is not set > > 1. Use vkMergePipelineCaches in eglSetBlobCacheFuncsANDROID as > blob cache callbacks are set after eglInititalize. > 2. Use a more proper way to save the cache data to disk. > > Bug: angleproject:3318 > Change-Id: Ieb5d10ab93e7afb2aab4446b387d7f36c878a686 > Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1559671 > Reviewed-by: Jamie Madill <jmadill@chromium.org> > Commit-Queue: Jamie Madill <jmadill@chromium.org> TBR=syoussefi@chromium.org,jmadill@chromium.org,fei.yang@arm.com # Not skipping CQ checks because original CL landed > 1 day ago. Bug: angleproject:3318 Change-Id: I51e49bf103142e80b2c9028b3af6d3bb58cf6348 Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1683820 Reviewed-by: Cody Northrop <cnorthrop@google.com> Commit-Queue: Jamie Madill <jmadill@chromium.org>