Bug 962278 - Adjust default APZ DPI and settings that depend on it. r=kats
Bug 962278 - Propagate device DPI to APZC on B2G/gonk. r=kats
Bug 963028 - AArch64 support for jemalloc. r=froydnj
Bug 963029 - AArch64 support for MFBT. r=froydnj
Bug 963032 - AArch64 support for Build Config. r=mshal