Embed a simple Mojo shell in content

content/browser/mojo_shell_context_impl.h

Index: content/browser/mojo_shell_context_impl.h
diff --git a/content/browser/mojo_shell_context_impl.h b/content/browser/mojo_shell_context_impl.h
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+// 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.
+
+#ifndef CONTENT_BROWSER_MOJO_SHELL_CONTEXT_IMPL_H_
+#define CONTENT_BROWSER_MOJO_SHELL_CONTEXT_IMPL_H_
+
+#include "base/bind.h"
+#include "base/macros.h"
+#include "base/memory/scoped_ptr.h"
+#include "content/public/browser/mojo_shell_context.h"
+#include "mojo/shell/application_manager.h"
+#include "url/gurl.h"
+
+namespace mojo {
+
+class ApplicationDelegate;
+
+namespace shell {
+class ApplicationLoader;
+}  // namespace shell
+
+}  // namespace mojo
+
+namespace content {
+
+// The global Mojo shell context for content embedders. By default this will
+// load new application instances in a utility process. A content embedder may
+// configure the global shell by overriding
+// |ContentBrowserClient::ConfigureMojoShell|.
+class MojoShellContextImpl : public MojoShellContext,
+                             public mojo::shell::ApplicationManager::Delegate {
+ public:
+  MojoShellContextImpl();
+  ~MojoShellContextImpl() override;
+
+  // Adds a mapping from |url| to the given |loader|, overriding the default
+  // loader used by content's Mojo shell.
+  void AddCustomLoader(
+      const GURL& url,
+      scoped_ptr<mojo::shell::ApplicationLoader> loader) override;
+
+ private:
+  // mojo::shell::ApplicationManager::Delegate:
+  GURL ResolveMappings(const GURL& url) override;
+  GURL ResolveMojoURL(const GURL& url) override;
+
+  scoped_ptr<mojo::shell::ApplicationManager> application_manager_;
+
+  DISALLOW_COPY_AND_ASSIGN(MojoShellContextImpl);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_MOJO_SHELL_CONTEXT_IMPL_H_