[Chromecast] Slightly tweak fling friction.

Makes fling speed feel more natural.

Bug: none
Test: flashed, flinged
Change-Id: I8b181dbe0e9dec00f1e7a91799bbd83e86bea48b
Reviewed-on: https://chromium-review.googlesource.com/1140503
Commit-Queue: Alex Sakhartchouk <alexst@chromium.org>
Commit-Queue: Kevin Schoedel <kpschoedel@chromium.org>
Reviewed-by: Kevin Schoedel <kpschoedel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#575681}

ui/events/chromecast/scroller.cc

@@ -189,7 +189,7 @@ Scroller::Scroller(const Config& config)
       distance_(0),
       fling_friction_(config.fling_friction),
       deceleration_(ComputeDeceleration(fling_friction_)),
-      tuning_coeff_(ComputeDeceleration(0.8f)) {
+      tuning_coeff_(ComputeDeceleration(0.9f)) {
 }
 
 Scroller::~Scroller() {