Update idlsync.py to pull in dependencies required for chrome api generation.

third_party/chrome/tools/test/crossref.json

Index: third_party/chrome/tools/test/crossref.json
diff --git a/third_party/chrome/tools/test/crossref.json b/third_party/chrome/tools/test/crossref.json
deleted file mode 100644
index 9d3f90578447dc56612784074af937a4b17aa879..0000000000000000000000000000000000000000
--- a/third_party/chrome/tools/test/crossref.json
+++ /dev/null
@@ -1,75 +0,0 @@
-[
-  {
-    "namespace": "crossref",
-    "dependencies": ["simple_api"],
-    "types": [
-      {
-        "id": "CrossrefType",
-        "type": "object",
-        "properties": {
-          "testType": {
-            "$ref": "simple_api.TestType",
-            "optional": true
-          }
-        }
-      }
-    ],
-    "functions": [
-      {
-        "name": "testTypeOptionalParam",
-        "type": "function",
-        "description": "Takes TestType as a param.",
-        "parameters": [
-          {
-            "name": "testType",
-            "$ref": "simple_api.TestType",
-            "optional": true
-          },
-          {
-            "name": "callback",
-            "type": "function",
-            "parameters": []
-          }
-        ]
-      },
-      {
-        "name": "getTestType",
-        "type": "function",
-        "description": "Return a TestType.",
-        "parameters": [
-          {
-            "name": "callback",
-            "type": "function",
-            "parameters": [
-              {
-                "name": "result",
-                "$ref": "simple_api.TestType",
-                "description": "A TestType."
-              }
-            ]
-          }
-        ]
-      },
-      {
-        "name": "testTypeInObject",
-        "type": "function",
-        "description": "Takes an optional object with a TestType and a bool.",
-        "parameters": [
-          {
-            "name": "paramObject",
-            "type": "object",
-            "properties": {
-              "testType": {"$ref": "simple_api.TestType", "optional": true},
-              "boolean": {"type": "boolean"}
-            }
-          },
-          {
-            "name": "callback",
-            "type": "function",
-            "parameters": []
-          }
-        ]
-      }
-    ]
-  }
-]