Use the URL passed to navigator.share().

chrome/android/java/src/org/chromium/chrome/browser/webshare/ShareServiceImpl.java

Index: chrome/android/java/src/org/chromium/chrome/browser/webshare/ShareServiceImpl.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/webshare/ShareServiceImpl.java b/chrome/android/java/src/org/chromium/chrome/browser/webshare/ShareServiceImpl.java
index 110ce20bf50d2840001ec7ad3a5c2f579ed48566..f33dd2b2e996bb47c25ca8ce81934fd912d3aeff 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/webshare/ShareServiceImpl.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/webshare/ShareServiceImpl.java
@@ -12,6 +12,7 @@ import org.chromium.chrome.browser.share.ShareHelper;
 import org.chromium.content.browser.ContentViewCore;
 import org.chromium.content_public.browser.WebContents;
 import org.chromium.mojo.system.MojoException;
+import org.chromium.mojom.url.mojom.Url;
 import org.chromium.mojom.webshare.ShareService;
 import org.chromium.ui.base.WindowAndroid;
 
@@ -33,7 +34,7 @@ public class ShareServiceImpl implements ShareService {
     public void onConnectionError(MojoException e) {}
 
     @Override
-    public void share(String title, String text, final ShareResponse callback) {
+    public void share(String title, String text, Url url, final ShareResponse callback) {
         if (mActivity == null) {
             callback.call("Share failed");
             return;
@@ -45,7 +46,7 @@ public class ShareServiceImpl implements ShareService {
             }
         };
 
-        ShareHelper.share(false, false, mActivity, title, text, null, null, null, innerCallback);
+        ShareHelper.share(false, false, mActivity, title, text, url.url, null, null, innerCallback);
     }
 
     @Nullable