diff -r 000000000000 -r 6474c204b198 parser/html/nsHtml5SpeculativeLoad.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/parser/html/nsHtml5SpeculativeLoad.cpp	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,61 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsHtml5SpeculativeLoad.h"
+#include "nsHtml5TreeOpExecutor.h"
+
+nsHtml5SpeculativeLoad::nsHtml5SpeculativeLoad()
+#ifdef DEBUG
+ : mOpCode(eSpeculativeLoadUninitialized)
+#endif
+{
+  MOZ_COUNT_CTOR(nsHtml5SpeculativeLoad);
+}
+
+nsHtml5SpeculativeLoad::~nsHtml5SpeculativeLoad()
+{
+  MOZ_COUNT_DTOR(nsHtml5SpeculativeLoad);
+  NS_ASSERTION(mOpCode != eSpeculativeLoadUninitialized,
+               "Uninitialized speculative load.");
+}
+
+void
+nsHtml5SpeculativeLoad::Perform(nsHtml5TreeOpExecutor* aExecutor)
+{
+  switch (mOpCode) {
+    case eSpeculativeLoadBase:
+      aExecutor->SetSpeculationBase(mUrl);
+      break;
+    case eSpeculativeLoadImage:
+      aExecutor->PreloadImage(mUrl, mCrossOrigin);
+      break;
+    case eSpeculativeLoadScript:
+      aExecutor->PreloadScript(mUrl, mCharset, mTypeOrCharsetSource,
+                               mCrossOrigin, false);
+      break;
+    case eSpeculativeLoadScriptFromHead:
+      aExecutor->PreloadScript(mUrl, mCharset, mTypeOrCharsetSource,
+                               mCrossOrigin, true);
+      break;
+    case eSpeculativeLoadStyle:
+      aExecutor->PreloadStyle(mUrl, mCharset, mCrossOrigin);
+      break;
+    case eSpeculativeLoadManifest:  
+      aExecutor->ProcessOfflineManifest(mUrl);
+      break;
+    case eSpeculativeLoadSetDocumentCharset: {
+        nsAutoCString narrowName;
+        CopyUTF16toUTF8(mCharset, narrowName);
+        NS_ASSERTION(mTypeOrCharsetSource.Length() == 1,
+            "Unexpected charset source string");
+        int32_t intSource = (int32_t)mTypeOrCharsetSource.First();
+        aExecutor->SetDocumentCharsetAndSource(narrowName,
+                                               intSource);
+      }
+      break;
+    default:
+      NS_NOTREACHED("Bogus speculative load.");
+      break;
+  }
+}