Implement API features for the Extension API feature system

chrome/test/data/extensions/extension_api_unittest/privileged_api_features.json

Index: chrome/test/data/extensions/extension_api_unittest/privileged_api_features.json
diff --git a/chrome/test/data/extensions/extension_api_unittest/privileged_api_features.json b/chrome/test/data/extensions/extension_api_unittest/privileged_api_features.json
new file mode 100644
index 0000000000000000000000000000000000000000..915dc4b371131559df82c7695833bca98c5a5eac
--- /dev/null
+++ b/chrome/test/data/extensions/extension_api_unittest/privileged_api_features.json
@@ -0,0 +1,38 @@
+{
+  "test1": {
+    "contexts": ["content_script"]
+  },
+  "test1.foo": {
+    "contexts": ["blessed_extension"]
+  },
+  "test2": {
+    "contexts": ["blessed_extension"]
+  },
+  "test3": {
+    "contexts": ["content_script", "blessed_extension"]
+  },
+  "test4": {
+    "contexts": ["blessed_extension"]
+  },
+  "test4.foo": {
+    "contexts": ["content_script", "blessed_extension"]
+  },
+  "test4.bar": {
+    "dependencies": ["api:test4.foo"]
+  },
+  "test4.baz": {
+    "contexts": ["content_script"]
+  },
+  "test5": {
+    "contexts": ["blessed_extension"]
+  },
+  "test5.foo": {
+    "dependencies": ["test2:monkey"]
+  },
+  "test5.bar": {
+    "dependencies": ["api:test5.foo"]
+  },
+  "test5.bar.foo": {
+    "dependencies": ["api:test5.bar"]
+  }
+}