Show file weblinks (e.g. gitles) in diff view

Bug: Issue 4205
Change-Id: Ib5c832bb29453aa51ebe73732c7b8e6885e7e12f
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.html b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.html
index 6ed6cf7..2573ad1 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.html
+++ b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.html
@@ -172,6 +172,7 @@
             path="[[_path]]"
             change-num="[[_changeNum]]"
             patch-range="[[_patchRange]]"
+            files-weblinks="[[_filesWeblinks]]"
             available-patches="[[_computeAvailablePatches(_change.revisions)]]">
         </gr-patch-range-select>
         <div>
@@ -199,10 +200,12 @@
             on-save="_handlePrefsSave"
             on-cancel="_handlePrefsCancel"></gr-diff-preferences>
       </gr-overlay>
-      <gr-diff id="diff"
+      <gr-diff
+          id="diff"
           project="[[_change.project]]"
           commit="[[_change.current_revision]]"
           is-image-diff="{{_isImageDiff}}"
+          files-weblinks="{{_filesWeblinks}}"
           change-num="[[_changeNum]]"
           patch-range="[[_patchRange]]"
           path="[[_path]]"
diff --git a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js
index f7a73cf..3c3536b 100644
--- a/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js
+++ b/polygerrit-ui/app/elements/diff/gr-diff-view/gr-diff-view.js
@@ -81,9 +81,10 @@
       _userPrefs: Object,
       _diffMode: {
         type: String,
-        computed: '_getDiffViewMode(changeViewState.diffMode, _userPrefs)'
+        computed: '_getDiffViewMode(changeViewState.diffMode, _userPrefs)',
       },
       _isImageDiff: Boolean,
+      _filesWeblinks: Object,
     },
 
     behaviors: [