getInstalledRelatedApps: Add browser-side Mojo service (stub).

third_party/WebKit/Source/modules/installedapp/InstalledAppController.h

 // Copyright 2016 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.
 
 #ifndef InstalledAppController_h
 #define InstalledAppController_h
 
 #include "core/dom/ContextLifecycleObserver.h"
 #include "core/frame/LocalFrame.h"
 #include "modules/ModulesExport.h"
 #include "platform/Supplementable.h"
 #include "public/platform/WebVector.h"
 #include "public/platform/modules/installedapp/WebRelatedApplication.h"
 #include "public/platform/modules/installedapp/WebRelatedAppsFetcher.h"
+#include "public/platform/modules/installedapp/installed_app_provider.mojom-blink.h"
+#include "public/platform/modules/installedapp/related_application.mojom-blink.h"
 #include "wtf/RefPtr.h"
 #include "wtf/Vector.h"
 
 #include <memory>
 
 namespace blink {
 
 class SecurityOrigin;
 
 class MODULES_EXPORT InstalledAppController final
@@ skipping 25 matching lines @@
   // Inherited from ContextLifecycleObserver.
   void contextDestroyed(ExecutionContext*) override;
 
   // For a given security origin, takes a set of related applications and
   // filters them by those which belong to the current underlying platform, and
   // are actually installed. Passes the filtered list to the callback.
   void filterByInstalledApps(WTF::RefPtr<SecurityOrigin>,
                              const WebVector<WebRelatedApplication>&,
                              std::unique_ptr<AppInstalledCallbacks>);
 
+  // Callback from the InstalledAppProvider mojo service.
+  void OnFilterInstalledApps(std::unique_ptr<blink::AppInstalledCallbacks>,
+                             WTF::Vector<mojom::blink::RelatedApplicationPtr>);
+
+  WeakMember<LocalFrame> m_frame;

[haraken, 2017/02/23 08:35:51]

You can use supplementable(), which will return a frame for you.

[Matt Giuca, 2017/03/02 05:45:33]

Done. Thanks for the suggestion.

+
+  // Handle to the InstalledApp mojo service.
+  mojom::blink::InstalledAppProviderPtr m_provider = nullptr;
+
   WebRelatedAppsFetcher* m_relatedAppsFetcher;
 };
 
 }  // namespace blink
 
 #endif  // InstalledAppController_h