Omnibox UI Experiments: Add feature flags for 3 URL elision experiments.

tools/metrics/histograms/enums.xml

Index: tools/metrics/histograms/enums.xml
diff --git a/tools/metrics/histograms/enums.xml b/tools/metrics/histograms/enums.xml
index a809396ca53c8fc6d3fd4314961ad31ca023f21c..75da9c15045d9e552b7e845f8f37bd8574371637 100644
--- a/tools/metrics/histograms/enums.xml
+++ b/tools/metrics/histograms/enums.xml
@@ -22076,6 +22076,8 @@ uploading your change for review.  These are checked by presubmit scripts.
   <int value="-1631329950" label="ssl-version-max"/>
   <int value="-1630419335" label="enable-download-notification"/>
   <int value="-1624854957" label="enable-es3-apis"/>
+  <int value="-1623176642"
+      label="OmniboxUIExperimentHideSuggestionUrlProtocol:disabled"/>
   <int value="-1620568042" label="FeaturePolicy:disabled"/>
   <int value="-1619757314" label="touch-scrolling-mode"/>
   <int value="-1618707999" label="enable-webfonts-intervention-v2"/>
@@ -22416,6 +22418,8 @@ from previous Chrome versions.
   <int value="-418868128" label="enable-experimental-web-platform-features"/>
   <int value="-410852857" label="ImprovedA2HS:disabled"/>
   <int value="-405380243" label="enable-encryption-migration"/>
+  <int value="-401170566"
+      label="OmniboxUIExperimentHideSuggestionUrlPath:disabled"/>
   <int value="-400584764" label="ChromeHomeNtpRedesign:enabled"/>
   <int value="-396994784" label="enable-vr-shell"/>
   <int value="-396496344" label="ViewsTaskManager:enabled"/>
@@ -22463,6 +22467,8 @@ from previous Chrome versions.
   <int value="-279493876" label="WebVRExperimentalRendering:enabled"/>
   <int value="-278347667" label="default-tile-height"/>
   <int value="-277144896" label="enable-viewport-meta"/>
+  <int value="-275870837"
+      label="OmniboxUIExperimentHideSuggestionUrlPath:enabled"/>
   <int value="-275164173" label="QuickUnlockPinSignin:enabled"/>
   <int value="-268357961" label="enable-feature-policy"/>
   <int value="-254887599" label="google-profile-info"/>
@@ -22582,6 +22588,8 @@ from previous Chrome versions.
   <int value="200347243" label="WebVRExperimentalRendering:disabled"/>
   <int value="201343576" label="enable-password-change-support:enabled"/>
   <int value="203776499" label="enable-virtual-keyboard-overscroll"/>
+  <int value="208310693"
+      label="OmniboxUIExperimentHideSuggestionUrlSubdomain:disabled"/>
   <int value="223662457" label="BackgroundLoadingForDownloads:enabled"/>
   <int value="244697230" label="enable-theme-color-in-tabbed-mode"/>
   <int value="259021228" label="OffMainThreadFetch:disabled"/>
@@ -22627,6 +22635,8 @@ from previous Chrome versions.
   <int value="400322063" label="ash-disable-screen-orientation-lock"/>
   <int value="401983950" label="enable-spdy4"/>
   <int value="402143634" label="enable-search-button-in-omnibox-always"/>
+  <int value="405268097"
+      label="OmniboxUIExperimentHideSuggestionUrlProtocol:enabled"/>
   <int value="405329388"
       label="FramebustingNeedsSameOriginOrUserGesture:enabled"/>
   <int value="411250226" label="AutoplayMutedVideos:disabled"/>
@@ -22963,6 +22973,8 @@ from previous Chrome versions.
   <int value="1511161758" label="BackgroundLoader:enabled"/>
   <int value="1515196403" label="fast-user-switching"/>
   <int value="1517863401" label="history-entry-requires-user-gesture"/>
+  <int value="1538532463"
+      label="OmniboxUIExperimentHideSuggestionUrlSubdomain:enabled"/>
   <int value="1538690515" label="OneGoogleBarOnLocalNtp:enabled"/>
   <int value="1541723759" label="ServiceWorkerNavigationPreload:disabled"/>
   <int value="1548776701" label="AllBookmarks:disabled"/>