Make renderer calls into script declare there "type" (internal or author).

chrome/renderer/extensions/miscellaneous_bindings.cc

Index: chrome/renderer/extensions/miscellaneous_bindings.cc
diff --git a/chrome/renderer/extensions/miscellaneous_bindings.cc b/chrome/renderer/extensions/miscellaneous_bindings.cc
index dbf2784c90aba2d2c0e2cee31debe98e2079c06a..b87fdc64bed8fc8151c15b6674ce0dd6d82ad70f 100644
--- a/chrome/renderer/extensions/miscellaneous_bindings.cc
+++ b/chrome/renderer/extensions/miscellaneous_bindings.cc
@@ -20,6 +20,7 @@
 #include "content/public/renderer/render_thread.h"
 #include "content/public/renderer/render_view.h"
 #include "grit/renderer_resources.h"
+#include "third_party/WebKit/Source/WebKit/chromium/public/WebScopedMicrotaskSuppression.h"
 #include "v8/include/v8.h"
 
 // Message passing API example (in a content script):
@@ -145,6 +146,7 @@ class ExtensionImpl : public ChromeV8Extension {
   static void GCCallback(v8::Persistent<v8::Value> object, void* parameter) {
     v8::HandleScope handle_scope;
     GCCallbackArgs* args = reinterpret_cast<GCCallbackArgs*>(parameter);
+    WebKit::WebScopedMicrotaskSuppression suppression;
     args->callback->Call(args->callback->CreationContext()->Global(), 0, NULL);
     args->callback.Dispose();
     args->object.Dispose();