[Autofill] Migrate ContentAutofillDriver<-->AutofillAgent IPCs to mojo.

chrome/test/BUILD.gn

Index: chrome/test/BUILD.gn
diff --git a/chrome/test/BUILD.gn b/chrome/test/BUILD.gn
index a963c4ece8e4137b4350ba7e6e0817c03bd18bf5..a1c840222a99ea1489256126e07ae119bb958f00 100644
--- a/chrome/test/BUILD.gn
+++ b/chrome/test/BUILD.gn
@@ -1004,9 +1004,11 @@ if (!is_android) {
       "//media",
       "//media/base:test_support",
       "//media/cast:test_support",
+      "//mojo/common:common_base",
       "//net",
       "//net:test_support",
       "//sdch",
+      "//services/shell/public/cpp",
       "//skia",
       "//sync",
       "//sync:test_support_sync_api",