Call buildWorkingProcs in dumpProto

dumpProto() currently does not dump any processes unless "dumpsys
cpuinfo" is called first, because we did not call buildWorkingProcs
in dumpProto().

Bug: 146086163
Test: Build and dumpsys cpuinfo --proto
Change-Id: I992eff6f429397424165277b7145cef295571982

core/java/com/android/internal/os/ProcessCpuTracker.java

@@ -753,6 +753,8 @@ public class ProcessCpuTracker {
         proto.write(CpuUsageProto.Load.LOAD15, mLoad15);
         proto.end(currentLoadToken);
 
+        buildWorkingProcs();
+
         proto.write(CpuUsageProto.NOW, now);
         proto.write(CpuUsageProto.LAST_SAMPLE_TIME, mLastSampleTime);
         proto.write(CpuUsageProto.CURRENT_SAMPLE_TIME, mCurrentSampleTime);