Implement basic mojo Permission service and use it for Geolocation.

content/browser/frame_host/render_frame_host_impl.h

 // Copyright 2013 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_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 #define CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_
 
 #include <map>
 #include <vector>
 
@@ skipping 35 matching lines @@
 class FilePath;
 class ListValue;
 }
 
 namespace content {
 
 class CrossProcessFrameConnector;
 class CrossSiteTransferringRequest;
 class FrameTree;
 class FrameTreeNode;
+class PermissionServiceContext;
 class RenderFrameHostDelegate;
 class RenderFrameProxyHost;
 class RenderProcessHost;
 class RenderViewHostImpl;
 class RenderWidgetHostImpl;
 class StreamHandle;
 class TimeoutMonitor;
 struct CommitNavigationParams;
 struct CommonNavigationParams;
 struct ContextMenuParams;
@@ skipping 532 matching lines @@
   // The most recently received accessibility tree - for testing only.
   scoped_ptr<ui::AXTree> ax_tree_for_testing_;
   // Flag to not create a BrowserAccessibilityManager, for testing. If one
   // already exists it will still be used.
   bool no_create_browser_accessibility_manager_for_testing_;
 
   // PlzNavigate: Owns the stream used in navigations to store the body of the
   // response once it has started.
   scoped_ptr<StreamHandle> stream_handle_;
 
+  // Context shared for each PermissionService instance created for this RFH.
+  scoped_ptr<PermissionServiceContext> permission_service_context_;
+
   // NOTE: This must be the last member.
   base::WeakPtrFactory<RenderFrameHostImpl> weak_ptr_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(RenderFrameHostImpl);
 };
 
 }  // namespace content
 
 #endif  // CONTENT_BROWSER_FRAME_HOST_RENDER_FRAME_HOST_IMPL_H_