Bluetooth Extension API: Add a discovery API

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

Index: chrome/browser/extensions/api/bluetooth/bluetooth_api.cc
diff --git a/chrome/browser/extensions/api/bluetooth/bluetooth_api.cc b/chrome/browser/extensions/api/bluetooth/bluetooth_api.cc
index 7b80b96d7a4aa25bd28e63df964dc610e60d156d..731b9502cc939a724b22c51530ef43501b5688f1 100644
--- a/chrome/browser/extensions/api/bluetooth/bluetooth_api.cc
+++ b/chrome/browser/extensions/api/bluetooth/bluetooth_api.cc
@@ -46,6 +46,9 @@ namespace {
 const char kFailedToConnect[] = "Connection failed";
 const char kInvalidDevice[] = "Invalid device";
 const char kSocketNotFoundError[] = "Socket not found: invalid socket id";
+const char kStartDiscoveryFailed[] =
+    "Starting discovery failed, or already discovering";
+const char kStopDiscoveryFailed[] = "Failed to stop discovery";
 
 }  // namespace
 
@@ -302,6 +305,54 @@ bool BluetoothWriteFunction::Respond() {
   return success_;
 }
 
+void BluetoothStartDiscoveryFunction::OnSuccessCallback() {
+  SendResponse(true);
+  Release();  // Added in RunImpl
+}
+
+void BluetoothStartDiscoveryFunction::OnErrorCallback() {
+  SetError(kStartDiscoveryFailed);
+  SendResponse(false);
+  Release();  // Added in RunImpl
+}
+
+bool BluetoothStartDiscoveryFunction::RunImpl() {
+  GetEventRouter(profile())->SetSendDiscoveryEvents(true);
+
+  // BluetoothAdapter will throw an error if we SetDiscovering(true) when
+  // discovery is already in progress
+  if (GetMutableAdapter(profile())->IsDiscovering()) {
+    SendResponse(true);
+    return true;
+  }
+
+  GetMutableAdapter(profile())->SetDiscovering(true,
+      base::Bind(&BluetoothStartDiscoveryFunction::OnSuccessCallback, this),
+      base::Bind(&BluetoothStartDiscoveryFunction::OnErrorCallback, this));
+  AddRef();  // Removed in whichever callback is called.
+  return true;
+}
+
+void BluetoothStopDiscoveryFunction::OnSuccessCallback() {
+  SendResponse(true);
+  Release();  // Added in RunImpl
+}
+
+void BluetoothStopDiscoveryFunction::OnErrorCallback() {
+  SetError(kStopDiscoveryFailed);
+  SendResponse(false);
+  Release();  // Added in RunImpl
+}
+
+bool BluetoothStopDiscoveryFunction::RunImpl() {
+  GetEventRouter(profile())->SetSendDiscoveryEvents(false);
+  GetMutableAdapter(profile())->SetDiscovering(false,
+      base::Bind(&BluetoothStopDiscoveryFunction::OnSuccessCallback, this),
+      base::Bind(&BluetoothStopDiscoveryFunction::OnErrorCallback, this));
+  AddRef();  // Removed in whichever callback is called.
+  return true;
+}
+
 #else
 
 // -----------------------------------------------------------------------------
@@ -366,6 +417,16 @@ bool BluetoothWriteFunction::Respond() {
   return false;
 }
 
+bool BluetoothStartDiscoveryFunction::RunImpl() {
+  NOTREACHED() << "Not implemented yet";
+  return false;
+}
+
+bool BluetoothStopDiscoveryFunction::RunImpl() {
+  NOTREACHED() << "Not implemented yet";
+  return false;
+}
+
 #endif
 
 BluetoothReadFunction::BluetoothReadFunction() {}