Deprecate TimeToGetLinkToText histogram

Bug: 1214879
Change-Id: I0956622b469aed98cf79dce68fcfeba1e924665f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/3072781
Reviewed-by: Guillaume Jenkins <gujen@google.com>
Reviewed-by: Kyle Milka <kmilka@chromium.org>
Reviewed-by: Elly Fong-Jones <ellyjones@chromium.org>
Commit-Queue: Gayane Petrosyan <gayane@chromium.org>
Cr-Commit-Position: refs/heads/master@{#909902}
diff --git a/chrome/browser/share/android/java/src/org/chromium/chrome/browser/share/link_to_text/LinkToTextCoordinator.java b/chrome/browser/share/android/java/src/org/chromium/chrome/browser/share/link_to_text/LinkToTextCoordinator.java
index cc35d33b..5f6feb4 100644
--- a/chrome/browser/share/android/java/src/org/chromium/chrome/browser/share/link_to_text/LinkToTextCoordinator.java
+++ b/chrome/browser/share/android/java/src/org/chromium/chrome/browser/share/link_to_text/LinkToTextCoordinator.java
@@ -11,7 +11,6 @@
 import androidx.annotation.VisibleForTesting;
 
 import org.chromium.base.Callback;
-import org.chromium.base.metrics.RecordHistogram;
 import org.chromium.base.task.PostTask;
 import org.chromium.blink.mojom.TextFragmentReceiver;
 import org.chromium.chrome.R;
@@ -59,7 +58,6 @@
     private final Tab mTab;
     private final ChromeShareExtras mChromeShareExtras;
     private final long mShareStartTime;
-    private final long mRequestSelectorStartTime;
 
     private String mShareUrl;
     private TextFragmentReceiver mProducer;
@@ -102,7 +100,6 @@
 
         mTab.addObserver(this);
         mCancelRequest = false;
-        mRequestSelectorStartTime = System.currentTimeMillis();
     }
 
     public ShareParams getShareParams(@LinkToggleState int linkToggleState) {
@@ -122,9 +119,6 @@
 
     @VisibleForTesting
     void onSelectorReady(String selector) {
-        RecordHistogram.recordTimesHistogram(
-                "Sharing.SharingHubAndroid.SharedHighlights.TimeToGetLinkToText",
-                System.currentTimeMillis() - mRequestSelectorStartTime);
         if (mCancelRequest) return;
 
         if (ChromeFeatureList.isEnabled(ChromeFeatureList.PREEMPTIVE_LINK_TO_TEXT_GENERATION)) {
diff --git a/tools/metrics/histograms/metadata/sharing/histograms.xml b/tools/metrics/histograms/metadata/sharing/histograms.xml
index b159855..06ec046 100644
--- a/tools/metrics/histograms/metadata/sharing/histograms.xml
+++ b/tools/metrics/histograms/metadata/sharing/histograms.xml
@@ -567,6 +567,9 @@
 <histogram
     name="Sharing.SharingHubAndroid.SharedHighlights.TimeToGetLinkToText"
     units="ms" expires_after="2021-07-11">
+  <obsolete>
+    Removed in M94.
+  </obsolete>
   <owner>gayane@chromium.org</owner>
   <owner>chrome-shared-highlighting@google.com</owner>
   <summary>