Introduce background.scripts feature for extension manifests.

chrome/common/extensions/extension_manifests_unittest.cc

Index: chrome/common/extensions/extension_manifests_unittest.cc
diff --git a/chrome/common/extensions/extension_manifests_unittest.cc b/chrome/common/extensions/extension_manifests_unittest.cc
index e881c0717cb32c149cce3d58f909186c45191a48..087573cd433a0f431cfb7dd335d242750bcd54fa 100644
--- a/chrome/common/extensions/extension_manifests_unittest.cc
+++ b/chrome/common/extensions/extension_manifests_unittest.cc
@@ -1016,7 +1016,7 @@ TEST_F(ExtensionManifestTest, BackgroundPage) {
   scoped_refptr<Extension> extension(
       LoadAndExpectSuccess("background_page.json"));
   ASSERT_TRUE(extension);
-  EXPECT_EQ("/foo.html", extension->background_url().path());
+  EXPECT_EQ("/foo.html", extension->GetBackgroundURL().path());
 
   std::string error;
   scoped_ptr<DictionaryValue> manifest(
@@ -1024,12 +1024,26 @@ TEST_F(ExtensionManifestTest, BackgroundPage) {
   ASSERT_TRUE(manifest.get());
   extension = LoadAndExpectSuccess(Manifest(manifest.get(), ""));
   ASSERT_TRUE(extension);
-  EXPECT_EQ("/foo.html", extension->background_url().path());
+  EXPECT_EQ("/foo.html", extension->GetBackgroundURL().path());
 
   manifest->SetInteger(keys::kManifestVersion, 2);
   extension = LoadAndExpectSuccess(Manifest(manifest.get(), ""));
   ASSERT_TRUE(extension);
-  EXPECT_FALSE(extension->background_url().is_valid());
+  EXPECT_FALSE(extension->GetBackgroundURL().is_valid());
+}
+
+TEST_F(ExtensionManifestTest, BackgroundScripts) {
+  scoped_refptr<Extension> extension(
+      LoadAndExpectSuccess("background_scripts.json"));
+  ASSERT_TRUE(extension);
+  EXPECT_EQ(2u, extension->background_scripts().size());
+  EXPECT_EQ("foo.js", extension->background_scripts()[0u]);
+  EXPECT_EQ("bar/baz.js", extension->background_scripts()[1u]);
+
+  EXPECT_TRUE(extension->has_background_page());
+  EXPECT_EQ(std::string("/") +
+            extension_filenames::kGeneratedBackgroundPageFilename,
+            extension->GetBackgroundURL().path());
 }
 
 TEST_F(ExtensionManifestTest, PageActionManifestVersion2) {