cocoa: add --use-views-task-manager

tools/metrics/histograms/histograms.xml

Index: tools/metrics/histograms/histograms.xml
diff --git a/tools/metrics/histograms/histograms.xml b/tools/metrics/histograms/histograms.xml
index 7100028141394f7ddbc3c909e6b12ad5d6666bc1..96312ad192c8076e0a55788b93726c1ede16382f 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -99401,6 +99401,7 @@ from previous Chrome versions.
   <int value="-418868128" label="enable-experimental-web-platform-features"/>
   <int value="-410852857" label="ImprovedA2HS:disabled"/>
   <int value="-396994784" label="enable-vr-shell"/>
+  <int value="-396496344" label="ViewsTaskManager:enabled"/>
   <int value="-395606844" label="enable-site-settings"/>
   <int value="-387606010" label="ArcBootCompletedBroadcast:enabled"/>
   <int value="-385337473" label="enable-fast-unload"/>
@@ -99503,6 +99504,7 @@ from previous Chrome versions.
   <int value="10458238" label="disable-print-preview-simplify"/>
   <int value="11698808" label="enable-dom-distiller-button-animation"/>
   <int value="27507364" label="apps-keep-chrome-alive"/>
+  <int value="31848187" label="ViewsTaskManager:disabled"/>
   <int value="33778663" label="OriginTrials:enabled"/>
   <int value="37024318" label="disable-affiliation-based-matching"/>
   <int value="44088203" label="ExpensiveBackgroundTimerThrottling:enabled"/>