Support linearized loading

testing/embedder_test.h

Index: testing/embedder_test.h
diff --git a/testing/embedder_test.h b/testing/embedder_test.h
index fb3ea428f16e1e2cc0ac4a8f2a973597f68bab60..035906d6c9d9820989410599c8437aa72858fa64 100644
--- a/testing/embedder_test.h
+++ b/testing/embedder_test.h
@@ -80,7 +80,8 @@ class EmbedderTest : public ::testing::Test,
 
   // Open the document specified by |filename|, and create its form fill
   // environment, or return false on failure.
-  virtual bool OpenDocument(const std::string& filename);
+  virtual bool OpenDocument(const std::string& filename,
+                            bool must_linearize = false);
 
   // Perform JavaScript actions that are to run at document open time.
   virtual void DoOpenActions();