Add Finch flag for Copyless Paste

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 6df32d06dc7371157274dd9a4dcebbf2f7768159..610cb2e90fbe0749a81ebb83cf8f49f41ffe11a9 100644
--- a/tools/metrics/histograms/histograms.xml
+++ b/tools/metrics/histograms/histograms.xml
@@ -101075,6 +101075,7 @@ from previous Chrome versions.
   <int value="-1160026273" label="enable-web-notification-custom-layouts"/>
   <int value="-1159563774" label="enable-accessibility-script-injection"/>
   <int value="-1158993534" label="PrintScaling:enabled"/>
+  <int value="-1155543191" label="CopylessPaste:disabled"/>
   <int value="-1151766565" label="enable-fullscreen-tab-detaching"/>
   <int value="-1137442543" label="enable-slimming-paint"/>
   <int value="-1136627751" label="ignore-autocomplete-off-autofill"/>
@@ -101549,6 +101550,7 @@ from previous Chrome versions.
   <int value="835018878" label="disable-quic"/>
   <int value="838887742" label="manual-enhanced-bookmarks"/>
   <int value="841343322" label="disable-new-korean-ime"/>
+  <int value="846951416" label="CopylessPaste:enabled"/>
   <int value="851085848" label="enable-settings-window"/>
   <int value="854730848" label="disable-app-info-dialog-mac"/>
   <int value="855746780" label="disable-physical-keyboard-autocorrect"/>