bluetooth: Move connect/disconnect to mojo

content/browser/bluetooth/frame_connected_bluetooth_devices.h

Index: content/browser/bluetooth/frame_connected_bluetooth_devices.h
diff --git a/content/browser/bluetooth/frame_connected_bluetooth_devices.h b/content/browser/bluetooth/frame_connected_bluetooth_devices.h
new file mode 100644
index 0000000000000000000000000000000000000000..fe4abc584b3bf07509394e0d354667897967fd10
--- /dev/null
+++ b/content/browser/bluetooth/frame_connected_bluetooth_devices.h
@@ -0,0 +1,79 @@
+// 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 CONTENT_BROWSER_BLUETOOTH_FRAME_CONNECTED_BLUETOOTH_DEVICES_H_
+#define CONTENT_BROWSER_BLUETOOTH_FRAME_CONNECTED_BLUETOOTH_DEVICES_H_
+
+#include <memory>
+#include <string>
+#include <unordered_map>
+
+#include "content/common/content_export.h"
+#include "url/origin.h"
+
+namespace device {
+class BluetoothGattConnection;
+}  // namespace device
+
+namespace content {
+
+class WebContents;
+class WebContentsImpl;
+
+// Holds information about connected devices and updates the WebContents
+// when new connections are made or connections closed. WebContents must
+// outlive this class.
+// This class does not keep track of the status of the connections. Owners of
+// this class should inform it when a connection is terminated so that the
+// connection removed from the appropriate maps.

[Jeffrey Yasskin, 2016/05/03 16:31:33]

"connection is removed"

[ortuno, 2016/05/03 16:54:39]

Done.

+class CONTENT_EXPORT FrameConnectedBluetoothDevices final {
+ public:
+  // |web_contents| should be the WebContentsImpl that owns the
+  // WebBluetoothServiceImpl that owns this map.

[Jeffrey Yasskin, 2016/05/03 16:31:32]

I think we should mention the third level of ownership: "the WebContentsImpl
that owns the RenderFrameHost that owns the WebBluetoothServiceImpl that owns
this object." It'd be possible to just pass in the RenderFrameHost, since we can
look up and cache the WebContentsImpl from there. Maybe we should do that, to
make it clearer which frame this object is attached to?

[ortuno, 2016/05/03 16:54:39]

Good idea. Changed to take a RenderFrameHost.

+  explicit FrameConnectedBluetoothDevices(WebContents* web_contents);
+  ~FrameConnectedBluetoothDevices();
+
+  // Returns true if the map holds a connection to |device_id|.
+  bool IsConnectedToDeviceWithId(const std::string& device_id);
+
+  // If a connection doesn't exist already for |device_id|, adds a connection to
+  // the map and increases the WebContents count of connected devices.
+  void Insert(const std::string& device_id,
+              std::unique_ptr<device::BluetoothGattConnection> connection);
+
+  // Deletes the BluetoothGattConnection for |device_id| and decrements the
+  // WebContents count of connected devices if |device_id| had a connection.
+  void CloseConnectionToDeviceWithId(const std::string& device_id);
+
+  // Deletes the BluetoothGattConnection for |device_address| and decrements the
+  // WebContents count of connected devices if |device_address| had a
+  // connection. Returns the device_id of the device associated with the
+  // connection.
+  std::string CloseConnectionToDeviceWithAddress(
+      const std::string& device_address);
+
+ private:
+  // Increments the Connected Devices count of the frame's WebContents.
+  void IncrementDevicesConnectedCount();
+  // Decrements the Connected Devices count of the frame's WebContents.
+  void DecrementDevicesConnectedCount();
+
+  // WebContentsImpl that owns the WebBluetoothServiceImpl that owns this map.
+  WebContentsImpl* web_contents_impl_;
+
+  // Keeps the BluetoothGattConnection objects alive so that connections don't
+  // get closed.
+  std::unordered_map<std::string,
+                     std::unique_ptr<device::BluetoothGattConnection>>
+      device_id_to_connection_map_;
+
+  // Keeps track of which device addresses correspond to which ids.
+  std::unordered_map<std::string, std::string> device_address_to_id_map_;
+
+  DISALLOW_COPY_AND_ASSIGN(FrameConnectedBluetoothDevices);
+};
+
+}  // namespace content
+
+#endif  // CONTENT_BROWSER_BLUETOOTH_FRAME_CONNECTED_BLUETOOTH_DEVICES_H_