CPAPI gears drag drop and renderer IPC....

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

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

V8 event checking is a TODO(noel), http://mondrian/10947778 for
the CPAPI (0.10) change submitted to gears.

BUG=7995

Original patch by Noel Gordon via:
http://codereview.chromium.org/99240
Review URL: http://codereview.chromium.org/115280

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@15986 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 10 insertions, 0 deletions

diff --git a/chrome/plugin/webplugin_proxy.h b/chrome/plugin/webplugin_proxy.h
index 2822fa8..e5594f0 100644
--- a/chrome/plugin/webplugin_proxy.h
+++ b/chrome/plugin/webplugin_proxy.h
@@ -5,6 +5,8 @@
 #ifndef CHROME_PLUGIN_PLUGIN_WEBPLUGIN_PROXY_H__
 #define CHROME_PLUGIN_PLUGIN_WEBPLUGIN_PROXY_H__
 
+#include <string>
+
 #include "base/hash_tables.h"
 #include "base/ref_counted.h"
 #include "base/scoped_handle.h"
@@ -55,6 +57,14 @@ class WebPluginProxy : public WebPlugin {
   void ShowModalHTMLDialog(const GURL& url, int width, int height,
                            const std::string& json_arguments,
                            std::string* json_retval);
+
+  // Called by gears over the CPAPI interface to verify that the given event is
+  // the current (javascript) drag event the browser is dispatching, and return
+  // the drag data, or control the drop effect (drag cursor), if so.
+  bool GetDragData(struct NPObject* event, bool add_data, int32* identity,
+                   int32* event_id, std::string* type, std::string* data);
+  bool SetDropEffect(struct NPObject* event, int effect);
+
   void OnMissingPluginStatus(int status);
   // class-specific methods