Basic infrastructure for the Bluetooth API.

chrome/browser/extensions/api/bluetooth/bluetooth_api.cc

+// Copyright (c) 2012 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/extensions/api/bluetooth/bluetooth_api.h"
+
+#include "chrome/browser/extensions/extension_service.h"
+#include "chrome/browser/profiles/profile.h"
+
+#if defined(OS_CHROMEOS)
+#include "chrome/browser/chromeos/bluetooth/bluetooth_adapter.h"
+#include "chrome/browser/chromeos/extensions/bluetooth_event_router.h"
+#endif
+
+namespace extensions {
+namespace api {
+
+#if defined(OS_CHROMEOS)
+bool BluetoothIsAvailableFunction::RunImpl() {
+  const chromeos::BluetoothAdapter *adapter =
+      profile()->GetExtensionService()->bluetooth_event_router()->adapter();
+  if (!adapter)
+    return false;

[Mihai Parparita -not on Chrome, 2012/03/21 21:48:52]

You have a DCHECK for adapter not being null in BluetoothEventRouter, so do you
really want to code defensively for that scenario?

Per the style guide
(http://dev.chromium.org/developers/coding-style#TOC-CHECK-vs-DCHECK-and-NOTRE...),
it's better to crash for DCHECK failures, rather than trying to recover.

[bryeung, 2012/03/22 00:37:04]

Thank you for pointing this out.  I removed the if statement here and below.

+
+  result_.reset(Value::CreateBooleanValue(adapter->IsPresent()));
+  SendResponse(true);

[asargent_no_longer_on_chrome, 2012/03/21 21:19:58]

Since you can synchronously answer the question on one spin of the message loop,
BluetoothIsAvailableFunction should probably inherit from SyncExtensionFunction
instead of AsyncExtensionFunction, and you can skip the call to SendResponse
here.

(Unless of course you expect other implementations to have to post a task to
another thread or something to be able to answer the question). 

[bryeung, 2012/03/21 21:34:14]

Thanks for the clarification: done.

+  return true;
+}
+
+bool BluetoothIsPoweredFunction::RunImpl() {

[asargent_no_longer_on_chrome, 2012/03/21 21:19:58]

same thing here

[bryeung, 2012/03/21 21:34:14]

Done.

+  const chromeos::BluetoothAdapter *adapter =
+      profile()->GetExtensionService()->bluetooth_event_router()->adapter();
+  if (!adapter)
+    return false;
+
+  result_.reset(Value::CreateBooleanValue(adapter->IsPowered()));
+  SendResponse(true);
+  return true;
+}
+
+#else
+
+// -----------------------------------------------------------------------------
+// NIY stubs
+// -----------------------------------------------------------------------------
+bool BluetoothIsAvailableFunction::RunImpl() {
+  NOTREACHED() << "Not implemented yet";
+  return false;
+}
+
+bool BluetoothIsPoweredFunction::RunImpl() {
+  NOTREACHED() << "Not implemented yet";
+  return false;
+}
+
+#endif
+
+bool BluetoothDisconnectFunction::RunImpl() {
+  NOTREACHED() << "Not implemented yet";
+  return false;
+}
+
+bool BluetoothReadFunction::RunImpl() {
+  NOTREACHED() << "Not implemented yet";
+  return false;
+}
+
+bool BluetoothSetOutOfBandPairingDataFunction::RunImpl() {
+  NOTREACHED() << "Not implemented yet";
+  return false;
+}
+
+bool BluetoothGetOutOfBandPairingDataFunction::RunImpl() {
+  NOTREACHED() << "Not implemented yet";
+  return false;
+}
+
+bool BluetoothGetAddressFunction::RunImpl() {
+  NOTREACHED() << "Not implemented yet";
+  return false;
+}
+
+bool BluetoothWriteFunction::RunImpl() {
+  NOTREACHED() << "Not implemented yet";
+  return false;
+}
+
+bool BluetoothConnectFunction::RunImpl() {
+  NOTREACHED() << "Not implemented yet";
+  return false;
+}
+
+bool BluetoothGetDevicesWithServiceFunction::RunImpl() {
+  NOTREACHED() << "Not implemented yet";
+  return false;
+}
+
+}  // namespace api
+}  // namespace extensions