commit b9826c5041de807762b7a651916a593df8172621
author lucaslin <lucaslin@google.com> Fri Jun 19 14:47:01 2020 +0800
committer lucaslin <lucaslin@google.com> Fri Jun 19 14:47:01 2020 +0800
tree 25034e315b404e8d1c829c1ed39975bca312c112
parent 8467e54f75aa7c03fe02614c26da65457484e0c9

Reduce the calling times of getCustomizedContextOrDefault()

In the current design, the getCustomizedContextOrDefault() will
be called for 6 times indirectly in the constructor of
NetworkMonitor.
Have a mCustomizedContext and get the value by calling
getCustomizedContextOrDefault() for one time to improve the
design.

Bug: 159093739
Test: 1. atest NetworkStackTests:NetworkMonitorTest
      2. atest NetworkStackNextTests:NetworkMonitorTest
Change-Id: Ie87df3130afc50a000af58bc638f04a008c4fa3d