Not for review - Rebase of crrev.com/62833003

public/platform/Platform.h

Index: public/platform/Platform.h
diff --git a/public/platform/Platform.h b/public/platform/Platform.h
index 907e1a7581362b7a83fc8c92162294ccc5838679..43d0cfc9782b59a3a419e1f1d25486ec04dfcc4b 100644
--- a/public/platform/Platform.h
+++ b/public/platform/Platform.h
@@ -352,7 +352,7 @@ public:
     // Threads -------------------------------------------------------
 
     // Creates an embedder-defined thread.
-    virtual WebThread* createThread(const char* name) { return 0; }
+    virtual WebThread* createThread(const char* name, bool isCompositorThread = false) { return 0; }
 
     // Returns an interface to the current thread. This is owned by the
     // embedder.
@@ -361,6 +361,11 @@ public:
     // Yield the current thread so another thread can be scheduled.
     virtual void yieldCurrentThread() { }
 
+    // Returns an interface to the compositor thread associated with the current
+    // thread, if there is one. It is an error to associate multiple compositor
+    // threads with a single renderer.
+    virtual WebThread* currentCompositorThread() { return 0; }
+
     // May return null.
     virtual WebScheduler* scheduler() { return 0; }