cros: Fix various small issues with cast tray entry.

ash/common/system/chromeos/cast/tray_cast.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "ash/common/system/chromeos/cast/tray_cast.h"
 
 #include <map>
 #include <string>
 #include <utility>
 #include <vector>
@@ skipping 142 matching lines @@
   WmShell::Get()->cast_config()->StopCasting(displayed_route_.Clone());
   WmShell::Get()->RecordUserMetricsAction(UMA_STATUS_AREA_CAST_STOP_CAST);
 }
 
 void CastCastView::UpdateLabel(
     const std::vector<mojom::SinkAndRoutePtr>& sinks_routes) {
   for (auto& i : sinks_routes) {
     const mojom::CastSinkPtr& sink = i->sink;
     const mojom::CastRoutePtr& route = i->route;
 
-    if (!route->id.empty()) {
+    // We only want to display casts that came from this machine, since on a
+    // busy network many other people could be casting.
+    if (!route->id.empty() && route->is_local_source) {
       displayed_route_ = route.Clone();
 
       // We want to display different labels inside of the title depending on
       // what we are actually casting - either the desktop, a tab, or a fallback
       // that catches everything else (ie, an extension tab).
       switch (route->content_source) {
         case ash::mojom::ContentSource::UNKNOWN:
           label()->SetText(
               l10n_util::GetStringUTF16(IDS_ASH_STATUS_TRAY_CAST_CAST_UNKNOWN));
+          stop_button()->SetAccessibleName(l10n_util::GetStringUTF16(
+              IDS_ASH_STATUS_TRAY_CAST_CAST_UNKNOWN_ACCESSIBILITY_STOP));
           break;
         case ash::mojom::ContentSource::TAB:
           label()->SetText(ElideString(l10n_util::GetStringFUTF16(
               IDS_ASH_STATUS_TRAY_CAST_CAST_TAB,
               base::UTF8ToUTF16(route->title), base::UTF8ToUTF16(sink->name))));
+          stop_button()->SetAccessibleName(
+              ElideString(l10n_util::GetStringFUTF16(
+                  IDS_ASH_STATUS_TRAY_CAST_CAST_TAB_ACCESSIBILITY_STOP,
+                  base::UTF8ToUTF16(route->title),
+                  base::UTF8ToUTF16(sink->name))));
           break;
         case ash::mojom::ContentSource::DESKTOP:
           label()->SetText(ElideString(
               l10n_util::GetStringFUTF16(IDS_ASH_STATUS_TRAY_CAST_CAST_DESKTOP,
                                          base::UTF8ToUTF16(sink->name))));
+          stop_button()->SetAccessibleName(
+              ElideString(l10n_util::GetStringFUTF16(
+                  IDS_ASH_STATUS_TRAY_CAST_CAST_DESKTOP_ACCESSIBILITY_STOP,
+                  base::UTF8ToUTF16(sink->name))));
           break;
       }
 
       PreferredSizeChanged();
       Layout();
-
-      // If this machine is the source of the activity, then we want to display
-      // it over any other activity. There can be multiple activities if other
-      // devices on the network are casting at the same time.
-      if (route->is_local_source)
-        break;
+      // Only need to update labels once.
+      break;
     }
   }
 }
 
 void CastCastView::ButtonPressed(views::Button* sender,
                                  const ui::Event& event) {
   StopCasting();
 }
 
 // This view by itself does very little. It acts as a front-end for managing
@@ skipping 336 matching lines @@
       tray_->SetVisible(is_mirror_casting_);
   } else {
     if (default_)
       default_->SetVisible(false);
     if (tray_)
       tray_->SetVisible(false);
   }
 }
 
 bool TrayCast::HasActiveRoute() {
-  if (is_mirror_casting_)
-    return true;
-
   for (const auto& sr : sinks_and_routes_) {
-    if (!sr->route->title.empty())
+    if (!sr->route->title.empty() && sr->route->is_local_source)
       return true;
   }
 
   return false;
 }
 
 void TrayCast::OnCastingSessionStartedOrStopped(bool started) {
   is_mirror_casting_ = started;
   UpdatePrimaryView();
 }
 
 }  // namespace ash