Fix testUpdateOomAdj_DoOne_AboveClient_NotStarted

The new OomAdjuster implementation relies on onProcessBeginLocked being
called. Use the helper updateOomAdj method which handles that.

Test: atest MockingOomAdjusterTests
Fix: 310995646
Change-Id: Ia5044569b8b9e2c1cbe49df75351e4e433c47619
1 file changed