Add a path for content/ to open and control a Bluetooth chooser dialog.

content/public/browser/web_contents_delegate.cc

Index: content/public/browser/web_contents_delegate.cc
diff --git a/content/public/browser/web_contents_delegate.cc b/content/public/browser/web_contents_delegate.cc
index 016097b3ab17b8ea94dac0a1a4a43789d0b306e7..6f9b32e8f5f4039a0e259beddae0a38e8ac486ec 100644
--- a/content/public/browser/web_contents_delegate.cc
+++ b/content/public/browser/web_contents_delegate.cc
@@ -147,6 +147,13 @@ JavaScriptDialogManager* WebContentsDelegate::GetJavaScriptDialogManager(
   return nullptr;
 }
 
+scoped_ptr<BluetoothChooser> WebContentsDelegate::RunBluetoothChooser(
+    WebContents* web_contents,
+    const BluetoothChooser::EventHandler& event_handler,
+    const GURL& origin) {
+  return nullptr;
+}
+
 bool WebContentsDelegate::EmbedsFullscreenWidget() const {
   return false;
 }