Revert 255262 "Migrate chrome.bluetooth API backend to use devic..."

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

Index: trunk/src/chrome/browser/extensions/api/bluetooth/bluetooth_api.cc
===================================================================
--- trunk/src/chrome/browser/extensions/api/bluetooth/bluetooth_api.cc	(revision 255369)
+++ trunk/src/chrome/browser/extensions/api/bluetooth/bluetooth_api.cc	(working copy)
@@ -636,19 +636,25 @@
 
 void BluetoothStartDiscoveryFunction::OnErrorCallback() {
   SetError(kStartDiscoveryFailed);
+  GetEventRouter(browser_context())->SetResponsibleForDiscovery(false);
   SendResponse(false);
   GetEventRouter(browser_context())->OnListenerRemoved();
 }
 
 bool BluetoothStartDiscoveryFunction::DoWork(
     scoped_refptr<BluetoothAdapter> adapter) {
-  GetEventRouter(browser_context())->OnListenerAdded();
-  GetEventRouter(browser_context())->StartDiscoverySession(
-      adapter,
-      extension_id(),
-      base::Bind(&BluetoothStartDiscoveryFunction::OnSuccessCallback, this),
-      base::Bind(&BluetoothStartDiscoveryFunction::OnErrorCallback, this));
+  GetEventRouter(browser_context())->SetSendDiscoveryEvents(true);
 
+  // If this profile is already discovering devices, there should be nothing
+  // else to do.
+  if (!GetEventRouter(browser_context())->IsResponsibleForDiscovery()) {
+    GetEventRouter(browser_context())->SetResponsibleForDiscovery(true);
+    GetEventRouter(browser_context())->OnListenerAdded();
+    adapter->StartDiscovering(
+        base::Bind(&BluetoothStartDiscoveryFunction::OnSuccessCallback, this),
+        base::Bind(&BluetoothStartDiscoveryFunction::OnErrorCallback, this));
+  }
+
   return true;
 }
 
@@ -659,17 +665,19 @@
 
 void BluetoothStopDiscoveryFunction::OnErrorCallback() {
   SetError(kStopDiscoveryFailed);
+  GetEventRouter(browser_context())->SetResponsibleForDiscovery(true);
   SendResponse(false);
   GetEventRouter(browser_context())->OnListenerRemoved();
 }
 
 bool BluetoothStopDiscoveryFunction::DoWork(
     scoped_refptr<BluetoothAdapter> adapter) {
-  GetEventRouter(browser_context())->StopDiscoverySession(
-      adapter,
-      extension_id(),
-      base::Bind(&BluetoothStopDiscoveryFunction::OnSuccessCallback, this),
-      base::Bind(&BluetoothStopDiscoveryFunction::OnErrorCallback, this));
+  GetEventRouter(browser_context())->SetSendDiscoveryEvents(false);
+  if (GetEventRouter(browser_context())->IsResponsibleForDiscovery()) {
+    adapter->StopDiscovering(
+        base::Bind(&BluetoothStopDiscoveryFunction::OnSuccessCallback, this),
+        base::Bind(&BluetoothStopDiscoveryFunction::OnErrorCallback, this));
+  }
 
   return true;
 }