DevTools: Support async call stacks for FileSystem API (part 1).

Source/core/inspector/InspectorDebuggerAgent.cpp

Index: Source/core/inspector/InspectorDebuggerAgent.cpp
diff --git a/Source/core/inspector/InspectorDebuggerAgent.cpp b/Source/core/inspector/InspectorDebuggerAgent.cpp
index 367ee470d56351c9fa08006a28934814eca24a1a..de67513368c3b874024b5275075bcf68270256df 100644
--- a/Source/core/inspector/InspectorDebuggerAgent.cpp
+++ b/Source/core/inspector/InspectorDebuggerAgent.cpp
@@ -842,6 +842,36 @@ void InspectorDebuggerAgent::didPerformExecutionContextTask()
         m_asyncCallStackTracker.didFireAsyncCall();
 }
 
+void InspectorDebuggerAgent::didEnqueueAsyncFileSystemCallback(ExecutionContext* context, AsyncFileSystemCallbacks* callback)
+{
+    if (m_asyncCallStackTracker.isEnabled())
+        m_asyncCallStackTracker.didEnqueueAsyncFileSystemCallback(context, callback, scriptDebugServer().currentCallFramesForAsyncStack());
+}
+
+void InspectorDebuggerAgent::didRemoveAsyncFileSystemCallback(ExecutionContext* context, AsyncFileSystemCallbacks* callback)
+{
+    if (m_asyncCallStackTracker.isEnabled())
+        m_asyncCallStackTracker.didRemoveAsyncFileSystemCallback(context, callback);
+}
+
+void InspectorDebuggerAgent::willHandleAsyncFileSystemCallback(ExecutionContext* context, AsyncFileSystemCallbacks* callback, bool willReschedule, bool hasMore)
+{
+    if (!m_asyncCallStackTracker.isEnabled())
+        return;
+    if (willReschedule)
+        m_asyncCallStackTracker.willRescheduleAsyncCallChain();
+    m_asyncCallStackTracker.willHandleAsyncFileSystemCallback(context, callback, hasMore);
+}
+
+void InspectorDebuggerAgent::didHandleAsyncFileSystemCallback(ExecutionContext* context, AsyncFileSystemCallbacks* callback, bool didReschedule)
+{
+    if (!m_asyncCallStackTracker.isEnabled())
+        return;
+    m_asyncCallStackTracker.didFireAsyncCall();
+    if (didReschedule)
+        m_asyncCallStackTracker.didRescheduleAsyncCallChain();
+}
+
 void InspectorDebuggerAgent::didReceiveV8AsyncTaskEvent(ExecutionContext* context, const String& eventType, const String& eventName, int id)
 {
     if (!m_asyncCallStackTracker.isEnabled())