Add a few more edge cases to CSS serialization test.

third_party/WebKit/Source/web/tests/FrameSerializerTest.cpp

Index: third_party/WebKit/Source/web/tests/FrameSerializerTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/FrameSerializerTest.cpp b/third_party/WebKit/Source/web/tests/FrameSerializerTest.cpp
index ed5a1335ce325f48e202737bed9fac3eb0d07d91..469a791d84fb198f4083e080eadaa4ffa46cecde 100644
--- a/third_party/WebKit/Source/web/tests/FrameSerializerTest.cpp
+++ b/third_party/WebKit/Source/web/tests/FrameSerializerTest.cpp
@@ -105,6 +105,10 @@ class FrameSerializerTest : public testing::Test,
     m_rewriteURLs.add(fromURL, toURL);
   }
 
+  void registerSkipURL(const char* url) {
+    m_skipURLs.append(KURL(m_baseUrl, url));
+  }
+
   void serialize(const char* url) {
     FrameTestHelpers::loadFrame(m_helper.webView()->mainFrame(),
                                 KURL(m_baseUrl, url).getString().utf8().data());
@@ -171,11 +175,16 @@ class FrameSerializerTest : public testing::Test,
     return true;
   }
 
+  bool shouldSkipResourceWithURL(const KURL& url) {
+    return m_skipURLs.contains(url);
+  }
+
   FrameTestHelpers::WebViewHelper m_helper;
   WebString m_folder;
   KURL m_baseUrl;
   Vector<SerializedResource> m_resources;
   HashMap<String, String> m_rewriteURLs;
+  Vector<String> m_skipURLs;
   String m_rewriteFolder;
 };
 
@@ -336,11 +345,15 @@ TEST_F(FrameSerializerTest, CSS) {
   registerURL("ul-dot.png", "image.png", "image/png");
   registerURL("ol-dot.png", "image.png", "image/png");
 
+  registerURL("included_in_another_frame.css", "text/css");
+  registerSkipURL("included_in_another_frame.css");
+
   serialize("css_test_page.html");
 
   EXPECT_EQ(15U, getResources().size());
 
   EXPECT_FALSE(isSerialized("do_not_serialize.png", "image/png"));
+  EXPECT_FALSE(isSerialized("included_in_another_frame.css", "text/css"));
 
   EXPECT_TRUE(isSerialized("css_test_page.html", "text/html"));
   EXPECT_TRUE(isSerialized("link_styles.css", "text/css"));