1 files changed, 10 insertions, 0 deletions
diff --git a/Source/WebKit/chromium/public/platform/WebThread.h b/Source/WebKit/chromium/public/platform/WebThread.h
index a7b372fee..b54bee849 100644
--- a/Source/WebKit/chromium/public/platform/WebThread.h
+++ b/Source/WebKit/chromium/public/platform/WebThread.h
@@ -51,9 +51,19 @@ public:
 
     virtual void postTask(Task*) = 0;
     virtual void postDelayedTask(Task*, long long delayMs) = 0;
+
     virtual void addTaskObserver(TaskObserver*) { }
     virtual void removeTaskObserver(TaskObserver*) { }
 
+    // enterRunLoop() processes tasks posted to this WebThread. This call does not return until some task calls exitRunLoop().
+    // WebThread does not support nesting, meaning that once the run loop is entered for a given WebThread it is not valid to
+    // call enterRunLoop() again.
+    virtual void enterRunLoop() = 0;
+
+    // exitRunLoop() runs tasks until there are no tasks available to run, then returns control to the caller of enterRunLoop().
+    // Must be called when the WebThread is running.
+    virtual void exitRunLoop() = 0;
+
     virtual ~WebThread() { }
 };