[Media Router WebUI] Switch back to sink view after blocking issue is resolved.

chrome/browser/resources/media_router/elements/media_router_container/media_router_container.js

Index: chrome/browser/resources/media_router/elements/media_router_container/media_router_container.js
diff --git a/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.js b/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.js
index 4aebf74bb9c72fc4110d74f9d01e790e18416c39..46bf89b7c61ead3901efe3bf7d707724ebf34007 100644
--- a/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.js
+++ b/chrome/browser/resources/media_router/elements/media_router_container/media_router_container.js
@@ -1088,18 +1088,29 @@ Polymer({
   },
 
   /**
-   * Updates |currentView_| if there is a new blocking issue. Clears any
-   * pending route creation properties if the issue corresponds with
-   * |pendingCreatedRouteId_|.
+   * Updates |currentView_| if there is a new blocking issue or a blocking
+   * issue is resolved. Clears any pending route creation properties if the
+   * issue corresponds with |pendingCreatedRouteId_|.
    *
-   * @param {?media_router.Issue} issue The new issue.
+   * @param {?media_router.Issue} issue The new issue, or null if the
+   *                              blocking issue was resolved.
    * @private
    */
   maybeShowIssueView_: function(issue) {
-    if (!!issue && issue.isBlocking)
-      this.currentView_ = media_router.MediaRouterView.ISSUE;
-    else
-      this.updateElementPositioning_();
+    if (!!issue) {
+      if (issue.isBlocking) {
+        this.currentView_ = media_router.MediaRouterView.ISSUE;
+      } else if (this.currentView_ == media_router.MediaRouterView.SINK_LIST) {
+        // Make space for the non-blocking issue in the sink list.
+        this.updateElementPositioning_();
+      }
+    } else {
+      // Switch back to the sink list if the issue was cleared. If the previous
+      // issue was non-blocking, this would be a no-op. It is expected that
+      // the only way to clear an issue is by user action; the IssueManager
+      // (C++ side) does not clear issues in the UI.
+      this.currentView_ = media_router.MediaRouterView.SINK_LIST;
+    }
 
     if (!!this.pendingCreatedRouteId_ && !!issue &&
         issue.routeId == this.pendingCreatedRouteId_) {