Making PageSerializer operate on single frames only.

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

Index: third_party/WebKit/Source/web/tests/PageSerializerTest.cpp
diff --git a/third_party/WebKit/Source/web/tests/PageSerializerTest.cpp b/third_party/WebKit/Source/web/tests/PageSerializerTest.cpp
index 242012de980914d073cfcbbee6bad7a60f87f123..d367080470dbf5a475f100fd0fb848fc177bffdf 100644
--- a/third_party/WebKit/Source/web/tests/PageSerializerTest.cpp
+++ b/third_party/WebKit/Source/web/tests/PageSerializerTest.cpp
@@ -48,6 +48,7 @@
 #include "web/WebLocalFrameImpl.h"
 #include "web/WebViewImpl.h"
 #include "web/tests/FrameTestHelpers.h"
+#include "wtf/Assertions.h"
 #include "wtf/Vector.h"
 
 using blink::URLTestHelpers::toKURL;
@@ -123,7 +124,12 @@ protected:
         for (const auto& rewriteURL: m_rewriteURLs)
             serializer.registerRewriteURL(rewriteURL.key, rewriteURL.value);
 
-        serializer.serialize(m_helper.webViewImpl()->mainFrameImpl()->frame()->page());
+        Frame* frame = m_helper.webViewImpl()->mainFrameImpl()->frame();
+        for (; frame; frame = frame->tree().traverseNext()) {
+            // This is safe, because tests do not do cross-site navigation
+            // (and therefore don't have remote frames).
+            serializer.serializeFrame(*toLocalFrame(frame));
+        }
     }
 
     Vector<SerializedResource>& getResources()
@@ -131,7 +137,6 @@ protected:
         return m_resources;
     }
 
-
     const SerializedResource* getResource(const char* url, const char* mimeType)
     {
         KURL kURL = KURL(m_baseUrl, url);