media: Add MediaDrmStorage

chrome/browser/media/android/cdm/media_drm_storage_factory.cc

+// Copyright 2017 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 "chrome/browser/media/android/cdm/media_drm_storage_factory.h"
+
+#include <utility>
+
+#include "base/logging.h"
+#include "base/memory/ptr_util.h"
+#include "chrome/browser/profiles/profile.h"
+#include "components/cdm/browser/media_drm_storage_impl.h"
+#include "components/prefs/pref_service.h"
+#include "content/public/browser/browser_context.h"
+#include "content/public/browser/browser_thread.h"
+#include "content/public/browser/render_frame_host.h"
+#include "content/public/browser/web_contents.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
+
+namespace chrome {
+
+void CreateMediaDrmStorage(content::RenderFrameHost* render_frame_host,
+                           media::mojom::MediaDrmStorageRequest request) {
+  DVLOG(1) << __func__;
+  DCHECK_CURRENTLY_ON(content::BrowserThread::UI);
+  DCHECK(render_frame_host);
+
+  content::WebContents* web_contents =
+      content::WebContents::FromRenderFrameHost(render_frame_host);
+  DCHECK(web_contents) << "WebContents not available.";
+
+  content::BrowserContext* browser_context = web_contents->GetBrowserContext();
+  DCHECK(browser_context) << "BrowserContext not available.";
+
+  Profile* profile = Profile::FromBrowserContext(browser_context);
+  DCHECK(profile) << "Profile not available.";
+
+  PrefService* pref_service = profile->GetPrefs();
+  DCHECK(pref_service) << "PrefService not available.";
+
+  url::Origin origin = render_frame_host->GetLastCommittedOrigin();
+  if (origin.unique()) {
+    DVLOG(1) << __func__ << ": Unique origin.";
+    return;
+  }
+
+  // The object will be deleted on connection error, or when the frame navigates
+  // away.
+  new cdm::MediaDrmStorageImpl(render_frame_host, pref_service, origin,
+                               std::move(request));
+}
+
+}  // namespace chrome