Implement chrome.streamsPrivate.abort() extensions function

chrome/browser/extensions/api/streams_private/streams_private_api.cc

Index: chrome/browser/extensions/api/streams_private/streams_private_api.cc
diff --git a/chrome/browser/extensions/api/streams_private/streams_private_api.cc b/chrome/browser/extensions/api/streams_private/streams_private_api.cc
index 1a1445aa22925b168ad253beb2b155b391d3f27b..d04ca80e08c2347f46917b50f12177a2224aa373 100644
--- a/chrome/browser/extensions/api/streams_private/streams_private_api.cc
+++ b/chrome/browser/extensions/api/streams_private/streams_private_api.cc
@@ -88,6 +88,13 @@ void StreamsPrivateAPI::ExecuteMimeTypeHandler(
   streams_[extension_id][url] = make_linked_ptr(stream.release());
 }
 
+void StreamsPrivateAPI::AbortStream(const std::string& extension_id,
+                                    const GURL& stream_url) {
+  StreamMap::iterator it = streams_.find(extension_id);
+  if (it != streams_.end())
+    it->second.erase(stream_url);
+}
+
 void StreamsPrivateAPI::OnExtensionUnloaded(
     content::BrowserContext* browser_context,
     const Extension* extension,
@@ -95,6 +102,20 @@ void StreamsPrivateAPI::OnExtensionUnloaded(
   streams_.erase(extension->id());
 }
 
+StreamsPrivateAbortFunction::StreamsPrivateAbortFunction() {
+}
+
+bool StreamsPrivateAbortFunction::Prepare() {
+  EXTENSION_FUNCTION_VALIDATE(args_->GetString(0, &stream_url_));
+  StreamsPrivateAPI::Get(browser_context())->AbortStream(extension_id(),
+                                                         GURL(stream_url_));
+  return true;
+}
+
+bool StreamsPrivateAbortFunction::Respond() {
+  return true;
+}
+
 static base::LazyInstance<BrowserContextKeyedAPIFactory<StreamsPrivateAPI> >
     g_factory = LAZY_INSTANCE_INITIALIZER;