Make AsyncExtensionFunction possible.

Change the bookmarks API to be async functions, so that they can delay their
response until the bookmark system is loaded.

BUG=12353
TEST=none
Review URL: http://codereview.chromium.org/114079

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17751 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 8 insertions, 4 deletions

diff --git a/chrome/browser/extensions/extension_function.cc b/chrome/browser/extensions/extension_function.cc
index a846d96..26adefb 100644
--- a/chrome/browser/extensions/extension_function.cc
+++ b/chrome/browser/extensions/extension_function.cc
@@ -33,17 +33,21 @@ const std::string AsyncExtensionFunction::GetResult() {
 }
 
 void AsyncExtensionFunction::SendResponse(bool success) {
+  if (!dispatcher())
+    return;
   if (bad_message_) {
-    dispatcher_->HandleBadMessage(this);
+    dispatcher()->HandleBadMessage(this);
   } else {
-    dispatcher_->SendResponse(this, success);
+    dispatcher()->SendResponse(this, success);
   }
 }
 
 std::string AsyncExtensionFunction::extension_id() {
-  return dispatcher_->extension_id();
+  DCHECK(dispatcher());
+  return dispatcher()->extension_id();
 }
 
 Profile* AsyncExtensionFunction::profile() {
-  return dispatcher_->profile();
+  DCHECK(dispatcher());
+  return dispatcher()->profile();
 }