CPAPI gears drag drop and renderer IPC.

CPAPI (0.10) functions for gears drag drop; one to extract thedrag type/data given an NPObject *event, one to override thedrop effect (drag cursor).

Gears drag drop API receives a browser event as an NPObject* sothe event is untrusted.  Provide IPC calls to the renderer sogears can pass the event to renderer/V8 for checking, prior todrag type/data extraction, or the setting of the drop effect.

Original patch by Noel Gordon via:
http://codereview.chromium.org/99240

BUG=7995
TEST=none
Review URL: http://codereview.chromium.org/112056

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@16808 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 15 insertions, 0 deletions

diff --git a/webkit/glue/npruntime_util.h b/webkit/glue/npruntime_util.h
index 1135246..1e27191 100644
--- a/webkit/glue/npruntime_util.h
+++ b/webkit/glue/npruntime_util.h
@@ -9,6 +9,10 @@
 
 class Pickle;
 
+namespace WebKit {
+class WebDragData;
+}
+
 namespace webkit_glue {
 
 // Efficiently serialize/deserialize a NPIdentifier
@@ -16,6 +20,17 @@ bool SerializeNPIdentifier(NPIdentifier identifier, Pickle* pickle);
 bool DeserializeNPIdentifier(const Pickle& pickle, void** pickle_iter,
                              NPIdentifier* identifier);
 
+// Return true (success) if the given npobj is the current
+// drag event in browser dispatch, and is accessible based on context execution
+// frames and their security origins and WebKit clipboard access policy. If so,
+// return the event id and the clipboard data (WebDragData).
+bool GetDragData(NPObject* npobj, int* event_id, WebKit::WebDragData* data);
+
+// Invoke the event access policy checks listed above with
+// GetDragData().  No need for clipboard data or event_id outputs, just confirm
+// the given npobj is the current & accessible drag event.
+bool IsDragEvent(NPObject* npobj);
+
 }  // namespace webkit_glue
 
 #endif  // WEBKIT_GLUE_NPRUNTIME_UTIL_H_