Issue #1467, #3397 - Rewrite the map from threads to tabs

src/plugin/PluginWbPassThrough.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2016 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 338 matching lines @@
   // There doesn't seem to be any other way to get this header before the request has been made.
   HRESULT nativeHr = httpNegotiate ? httpNegotiate->BeginningTransaction(szURL, szHeaders, dwReserved, pszAdditionalHeaders) : S_OK;
 
   if (pszAdditionalHeaders && *pszAdditionalHeaders)
   {
     m_boundDomain = ExtractHttpHeader<std::wstring>(*pszAdditionalHeaders, L"Referer:", L"\n");
   }
   m_boundDomain = TrimString(m_boundDomain);
   m_contentType = InferContentType(ToUtf16String(ExtractHttpAcceptHeader(m_spTargetProtocol)), m_boundDomain, src);
 
-  CPluginTab* tab = CPluginClass::GetTab(::GetCurrentThreadId());
+  CPluginTab* tab = CPluginClass::GetTabForCurrentThread();
   CPluginClient* client = CPluginClient::GetInstance();
 
   if (tab && client)
   {
     std::wstring documentUrl = tab->GetDocumentUrl();
     // Page is identical to document => don't block
     if (documentUrl == src)
     {
       return nativeHr;
     }
@@ skipping 85 matching lines @@
   }
 
   return OnStart(szUrl, pOIProtSink, pOIBindInfo, grfPI, dwReserved, m_spInternetProtocol);
 }
 
 STDMETHODIMP WbPassthroughProtocol::Read(/* [in, out] */ void *pv,/* [in] */ ULONG cb,/* [out] */ ULONG *pcbRead)
 {
   WBPassthruSink* pSink = GetSink();
   return pSink->OnRead(pv, cb, pcbRead);
 }