Bookmark Manager Drag and Drop backend....

chrome/common/extensions/api/extension_api.json

 [
   {
     "namespace": "extension",
     "unprivileged": true,
     "types": [
       {
         "id": "MessageSender",
         "type": "object",
         "description": "An object containing information about the script context that sent a message or request.",
         "properties": {
@@ skipping 1937 matching lines @@
         "name": "onClosed",
         "type": "function",
         "description": "Fired when the popup view is closed.",
         "parameters": []
       }
     ]
   },
   {
     "namespace": "experimental.bookmarkManager",
     "nodoc": true,
-    "types": [],
+    "types": [
+      {
+        "id": "BookmarkDragDataElement",
+        "nodoc": true,
+        "type": "object",
+        "properties": {
+          "id": {
+            "type": "string",
+            "optional": true,
+            "description": "The ID of the bookmark. This is only provided if the data is from the same profile."
+          },
+          "parentId": {
+            "type": "string",
+            "optional": true,
+            "description": "The ID of the parent of the bookmark. This is only provided if the data is from the same profile."
+          },
+          "title": {"type": "string"},
+          "url": {
+            "type": "string",
+            "optional": true
+          },
+          "children": {
+            "type": "array",
+            "items": {"$ref": "BookmarkDragDataElement"}
+          }
+        }
+      },
+      {
+        "id": "BookmarkDragData",
+        "nodoc": true,
+        "type": "object",
+        "description": "Information about the drag and drop data for use with drag and drop events.",
+        "properties": {
+          "sameProfile": {"type": "boolean"},
+          "elements": {
+            "type": "array",
+            "items": {"$ref": "BookmarkDragDataElement"}
+          }
+        }
+      }
+    ],
     "functions": [
       {
         "name": "copy",
         "type": "function",
         "description": "Copies the given bookmarks into the clipboard",
         "nodoc": "true",
         "parameters": [
           {
             "name": "idList",
             "description": "An array of string-valued ids",
@@ skipping 80 matching lines @@
              "name": "callback",
              "parameters": [
               {
                 "type": "object",
                 "properties": {},
                 "additionalProperties": {"type": "string"}
               }
             ]
           }
         ]
+      },
+      {
+        "name": "startDrag",
+        "type": "function",
+        "description": "Begins dragging a set of bookmarks",
+        "nodoc": "true",
+        "parameters": [
+          {
+            "name": "idList",
+            "description": "An array of string-valued ids",
+            "type": "array",
+            "items": {"type": "string"},
+            "minItems": 1
+          }
+        ]
+      },
+      {
+        "name": "drop",
+        "type": "function",
+        "description": "Performs the drop action of the drag and drop session",
+        "nodoc": "true",
+        "parameters": [
+          {
+            "name": "parentId",
+            "description": "The ID of the folder that the drop was made",
+            "type": "string"
+          },
+          {
+            "name": "index",
+            "description": "The index of the position to drop at. If left out the dropped items will be placed at the end of the existing children",
+            "type": "integer",
+            "minimum": 0,
+            "optional": true
+          }
+        ]
       }
     ],
     "events": [
       {
         "name": "onImportBegan",
         "type": "function",
         "description": "Fired when a bookmark import session is begun.  Expensive observers should ignore handleCreated updates until onImportEnded is fired.  Observers should still handle other notifications immediately.",
         "parameters": [
           {}
         ]
       },
       {
         "name": "onImportEnded",
         "type": "function",
         "description": "Fired when a bookmark import session is ended.",
         "parameters": [
           {}
         ]
+      },
+      {
+        "name": "onDragEnter",
+        "type": "function",
+        "description": "Fired when dragging bookmarks over the document",
+        "parameters": [
+          {"$ref": "BookmarkDragData"}
+        ]
+      },
+      {
+        "name": "onDragLeave",
+        "type": "function",
+        "description": "Fired when the drag and drop leaves the document",
+        "parameters": [
+          {"$ref": "BookmarkDragData"}
+        ]
+      },
+      {
+        "name": "onDrop",
+        "type": "function",
+        "description": "Fired when the user drops bookmarks on the document",
+        "parameters": [
+          {"$ref": "BookmarkDragData"}
+        ]
       }
-
     ]
   },
   {
     "namespace": "devtools",
     "nodoc": "true",
     "types": [],
     "functions": [
       {
         "name": "getTabEvents",
         "type": "function",
@@ skipping 88 matching lines @@
         "type": "function",
         "description": "Logs a message during internal unit testing.",
         "parameters": [
           {"type": "string", "name": "message"}
         ]
       }
     ],
     "events": []
   }
 ]