PlzNavigate: Fix for the http/tests/inspector/resource-har-conversion.html layout test failure.

third_party/WebKit/Source/web/FrameLoaderClientImpl.cpp

 /*
  * Copyright (C) 2009, 2012 Google Inc. All rights reserved.
  * Copyright (C) 2011 Apple Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
@@ skipping 534 matching lines @@
 
   WrappedResourceRequest wrappedResourceRequest(request);
   WebFrameClient::NavigationPolicyInfo navigationInfo(wrappedResourceRequest);
   navigationInfo.navigationType = static_cast<WebNavigationType>(type);
   navigationInfo.defaultPolicy = static_cast<WebNavigationPolicy>(policy);
   navigationInfo.extraData = ds ? ds->getExtraData() : nullptr;
   navigationInfo.replacesCurrentHistoryItem = replacesCurrentHistoryItem;
   navigationInfo.isHistoryNavigationInNewChildFrame =
       isHistoryNavigationInNewChildFrame;
   navigationInfo.isClientRedirect = isClientRedirect;
+  // Caching could be disabled for requests initiated by DevTools.
+  navigationInfo.isCacheDisabled =
+      devToolsAgent() ? devToolsAgent()->cacheDisabled() : false;

[pfeldman, 2017/01/10 23:10:05]

Request already carries cache policy that inspector set to BypassingCache, can
you reuse it? If not, we should instroduce a bit on ResourceRequest for
consistency with the rest of the plumbing. Devtools' cache disabled state should
not be exposed outside network agent.

   if (form)
     navigationInfo.form = WebFormElement(form);
 
   WebNavigationPolicy webPolicy =
       m_webFrame->client()->decidePolicyForNavigation(navigationInfo);
   return static_cast<NavigationPolicy>(webPolicy);
 }
 
 void FrameLoaderClientImpl::dispatchWillSendSubmitEvent(HTMLFormElement* form) {
   if (m_webFrame->client())
@@ skipping 427 matching lines @@
 WebDevToolsAgentImpl* FrameLoaderClientImpl::devToolsAgent() {
   return WebLocalFrameImpl::fromFrame(m_webFrame->frame()->localFrameRoot())
       ->devToolsAgentImpl();
 }
 
 KURL FrameLoaderClientImpl::overrideFlashEmbedWithHTML(const KURL& url) {
   return m_webFrame->client()->overrideFlashEmbedWithHTML(WebURL(url));
 }
 
 }  // namespace blink