Roll ICU to 45f655f

https://chromium.googlesource.com/chromium/deps/icu.git/+log/834113a..45f655f

45f655f Cherry-pick: UnicodeSet performance enhancement
d2afb05 Delete another empty block after trim data

[email protected],[email protected]

Bug: 899983,901532,v8:8414
Test: Android webview start-up perf
Test: v8: intl/regress-8414.js
Change-Id: Ibc3e84fb26c4b3a158823e9ce6cee709b3161da7
Reviewed-on: https://chromium-review.googlesource.com/c/1325564
Commit-Queue: Jungshik Shin <[email protected]>
Reviewed-by: Jungshik Shin <[email protected]>
Cr-Commit-Position: refs/heads/master@{#606705}
1 file changed