Script streaming: fix small script recognition heuristic.

Source/bindings/core/v8/ScriptStreamer.h

Index: Source/bindings/core/v8/ScriptStreamer.h
diff --git a/Source/bindings/core/v8/ScriptStreamer.h b/Source/bindings/core/v8/ScriptStreamer.h
index 5dea593eb1ebede3051c3bf762e39a2f50496cdd..c61e1337c796281606fc7a327a178078222dd4d3 100644
--- a/Source/bindings/core/v8/ScriptStreamer.h
+++ b/Source/bindings/core/v8/ScriptStreamer.h
@@ -84,9 +84,9 @@ public:
     // has processed it.
     void streamingComplete();
 
-    static void removeSmallScriptThresholdForTesting()
+    static void setSmallScriptThresholdForTesting(size_t threshold)
     {
-        kSmallScriptThreshold = 0;
+        kSmallScriptThreshold = threshold;
     }
 
     static size_t smallScriptThreshold() { return kSmallScriptThreshold; }
@@ -119,7 +119,8 @@ private:
     WTF::OwnPtr<v8::ScriptCompiler::ScriptStreamingTask> m_task;
     bool m_loadingFinished; // Whether loading from the network is done.
     bool m_parsingFinished; // Whether the V8 side processing is done.
-    bool m_firstDataChunkReceived;
+    // Whether we have received enough data to start the streaming.
+    bool m_haveEnoughDataForStreaming;
 
     // Whether the script source code should be retrieved from the Resource
     // instead of the ScriptStreamer.