Move allocate instance id to chrome/.

chrome/common/extensions/api/guestview.json

Index: chrome/common/extensions/api/guestview.json
diff --git a/chrome/common/extensions/api/guestview.json b/chrome/common/extensions/api/guestview.json
new file mode 100644
index 0000000000000000000000000000000000000000..ed82d6d175fbe764bdc4b7f51e08465da5701891
--- /dev/null
+++ b/chrome/common/extensions/api/guestview.json
@@ -0,0 +1,28 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+[
+  {
+    "namespace": "guestview",
+    "description": "none",
+    "functions": [
+      {
+        "name": "allocateInstanceId",
+        "type": "function",
+        "parameters": [
+          {
+            "type": "function",
+            "name": "callback",
+            "parameters": [
+              {
+                "type": "integer",
+                "name": "instanceId"
+              }
+            ]
+          }
+        ]
+      }
+    ]
+  }
+]