Fix the format of RefreshRate Duration in TimeStatsHelper

The parsing rule of regular expression in SfStatsCollectionHelper.java
was to trim the text with space and newline character. Align the format
of RefreshRate Duration with metrics defined in TimeStatsHelper.

Bug: 168772873
Test: make pts and run pts/cuj/scroll/chrome
Change-Id: Ibba7f3f72a426c71c85b1d6070b144e2e7d8018c
1 file changed