Add API tests for the chrome.hid API.

extensions/test/data/api_test/hid/api/manifest.json

Index: extensions/test/data/api_test/hid/api/manifest.json
diff --git a/extensions/test/data/api_test/hid/api/manifest.json b/extensions/test/data/api_test/hid/api/manifest.json
new file mode 100644
index 0000000000000000000000000000000000000000..e17391b5b0489dcc45b36e70f2e7272f73f4efe5
--- /dev/null
+++ b/extensions/test/data/api_test/hid/api/manifest.json
@@ -0,0 +1,15 @@
+{
+  "name": "chrome.hid",
+  "version": "0.1",
+  "description": "end-to-end browser tests for chrome.hid API",
+  "app": {
+    "background": {
+      "scripts": ["background.js"]
+    }
+  },
+  "permissions": [
+    "hid",
+    // This is a test device emulated by the mocks enabled for the test.
+    { "usbDevices": [{ "vendorId": 6353, "productId": 22768 }]}
+  ]
+}