ftrace_reader: Turn check to dcheck in cpu reader am: 7c73ec35bb am: 50992904e4
ftrace_reader: Turn check to dcheck in cpu reader am: 7c73ec35bb
am: 50992904e4

Change-Id: Id9241a0a756633604b829e7ed88f70da822d8c4b

google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto,google/perfetto