GTK: implement bookmark manager copy/paste.

- Refactor bookmark util clipboard code to be cross platform.
- Add a CBF_DATA format for writing arbitrary data to the clipboard.
- Change MenuGtk so that showing a menu only makes the menu items update asynchronously. This way we can show the menu immediately and we won't get in trouble if the delegate's IsCommandEnabled() runs a nested message loop.

I did not do any mac-side implementation of the new clipboard stuff. The implementation should be easy when they get around to writing the bookmark manager.

Review URL: http://codereview.chromium.org/159815

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@22419 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 5 insertions, 0 deletions

diff --git a/tools/gtk_clipboard_dump/gtk_clipboard_dump.cc b/tools/gtk_clipboard_dump/gtk_clipboard_dump.cc
index a064792..c96ee00 100644
--- a/tools/gtk_clipboard_dump/gtk_clipboard_dump.cc
+++ b/tools/gtk_clipboard_dump/gtk_clipboard_dump.cc
@@ -19,6 +19,11 @@ void PrintClipboardContents(GtkClipboard* clip) {
   GtkSelectionData* target_data =
       gtk_clipboard_wait_for_contents(clip,
                                       gdk_atom_intern("TARGETS", false));
+  if (!target_data) {
+    printf("failed to get the contents!\n");
+    return;
+  }
+
   gtk_selection_data_get_targets(target_data, &targets, &num_targets);
 
   printf("%d available targets:\n---------------\n", num_targets);