Unknown options in extension manifest file are silently ignored

chrome/common/extensions/manifest_unittest.cc

Index: chrome/common/extensions/manifest_unittest.cc
diff --git a/chrome/common/extensions/manifest_unittest.cc b/chrome/common/extensions/manifest_unittest.cc
index 66cfcdcd6d5dc269bba5f0016ec34d7a3133f056..a674b4ecfc12524fe450dc01757f59e764c651da 100644
--- a/chrome/common/extensions/manifest_unittest.cc
+++ b/chrome/common/extensions/manifest_unittest.cc
@@ -68,7 +68,7 @@ TEST_F(ManifestTest, Extension) {
   std::vector<std::string> warnings;
   manifest->ValidateManifest(&error, &warnings);
   EXPECT_TRUE(error.empty());
-  EXPECT_TRUE(warnings.empty());
+  ASSERT_EQ(1u, warnings.size());
   AssertType(manifest.get(), Extension::TYPE_EXTENSION);
 
   // The known key 'background_page' should be accessible.
@@ -92,7 +92,7 @@ TEST_F(ManifestTest, Extension) {
   warnings.clear();
   manifest->ValidateManifest(&error, &warnings);
   EXPECT_TRUE(error.empty());
-  ASSERT_EQ(1u, warnings.size());
+  ASSERT_EQ(2u, warnings.size());
   {
     Feature feature;
     feature.set_name("background_page");