Ellipsize publisher URL string in Custom Tabs.

Screenshots:
https://aberent-clankuicatalogue.googleplex.com/screenshot_view?screenshot_source=https://storage.cloud.google.com/chromium-result-details/a233cc605dc4d16fe77382e9b6bb848d85fdf6e6&key=0
https://aberent-clankuicatalogue.googleplex.com/screenshot_view?screenshot_source=https://storage.cloud.google.com/chromium-result-details/4235859320dfd9b9a63bb5ba4395aa6d2db85414&key=0
https://aberent-clankuicatalogue.googleplex.com/screenshot_view?screenshot_source=https://storage.cloud.google.com/chromium-result-details/0ea4efd9698da906d745c8654c0a1dcebafbe38e&key=0

Bug: 814365
Change-Id: Id895ad12fd2f79a82367511693f996c4c4756b6e
Reviewed-on: https://chromium-review.googlesource.com/1000699Reviewed-by: Ted Choc <tedchoc@chromium.org>
Commit-Queue: Bernhard Bauer <bauerb@chromium.org>
Cr-Commit-Position: refs/heads/master@{#549590}

chrome/android/java/src/org/chromium/chrome/browser/omnibox/UrlBar.java

@@ -658,6 +658,11 @@ public class UrlBar extends AutocompleteEditText {
         return super.onTextContextMenuItem(id);
     }
 
+    @Override
+    protected boolean getDefaultEditable() {
+        return false;
+    }
+
     /**
      * Sets the text content of the URL bar.
      *
@@ -982,6 +987,14 @@ public class UrlBar extends AutocompleteEditText {
         mUrlBarDelegate.onTextChangedForAutocomplete();
     }
 
+    /**
+     * Set whether the URL text should be ellipsized. Note that this is different from
+     * {@link #limitDisplayableLength} in that it limits the visible part of the text.
+     */
+    public void setShouldEllipsizeUrlText(boolean shouldEllipsize) {
+        setEllipsize(shouldEllipsize ? TextUtils.TruncateAt.END : null);
+    }
+
     /**
      * Span that displays ellipsis instead of the text. Used to hide portion of
      * very large string to get decent performance from TextView.

chrome/android/java/src/org/chromium/chrome/browser/toolbar/CustomTabToolbar.java

@@ -441,6 +441,8 @@ public class CustomTabToolbar extends ToolbarLayout implements LocationBar,
         if (mUrlBar.setUrl(url, displayText)) {
             mUrlBar.emphasizeUrl();
         }
+
+        mUrlBar.setShouldEllipsizeUrlText(publisherUrl != null);
     }
 
     private boolean isStoredArticle(String url) {