Use AtomicString type more consistently for mimeType / encoding

Source/core/loader/FrameLoader.cpp

 /*
  * Copyright (C) 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All rights reserved.
  * Copyright (C) 2008 Nokia Corporation and/or its subsidiary(-ies)
  * Copyright (C) 2008, 2009 Torch Mobile Inc. All rights reserved. (http://www.torchmobile.com/)
  * Copyright (C) 2008 Alp Toker <alp@atoker.com>
  * Copyright (C) Research In Motion Limited 2009. All rights reserved.
  * Copyright (C) 2011 Kris Jordan <krisjordan@gmail.com>
  * Copyright (C) 2011 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ skipping 766 matching lines @@
 
 void FrameLoader::reportLocalLoadFailed(Frame* frame, const String& url)
 {
     ASSERT(!url.isEmpty());
     if (!frame)
         return;
 
     frame->document()->addConsoleMessage(SecurityMessageSource, ErrorMessageLevel, "Not allowed to load local resource: " + url);
 }
 
-void FrameLoader::reload(ReloadPolicy reloadPolicy, const KURL& overrideURL, const String& overrideEncoding)
+void FrameLoader::reload(ReloadPolicy reloadPolicy, const KURL& overrideURL, const AtomicString& overrideEncoding)
 {
     DocumentLoader* documentLoader = activeDocumentLoader();
     if (!documentLoader)
         return;
 
     ResourceRequest request = documentLoader->request();
     // FIXME: We need to reset cache policy to prevent it from being incorrectly propagted to the reload.
     // Do we need to propagate anything other than the url?
     request.setCachePolicy(UseProtocolCachePolicy);
     if (!overrideURL.isEmpty())
@@ skipping 535 matching lines @@
             if (!targetFrames[i]->document()->dispatchBeforeUnloadEvent(page->chrome(), didAllowNavigation))
                 break;
         }
 
         if (i == targetFrames.size())
             shouldClose = true;
     }
     return shouldClose;
 }
 
-void FrameLoader::loadWithNavigationAction(const NavigationAction& action, FrameLoadType type, PassRefPtr<FormState> formState, const SubstituteData& substituteData, ClientRedirectPolicy clientRedirect, const String& overrideEncoding)
+void FrameLoader::loadWithNavigationAction(const NavigationAction& action, FrameLoadType type, PassRefPtr<FormState> formState, const SubstituteData& substituteData, ClientRedirectPolicy clientRedirect, const AtomicString& overrideEncoding)
 {
     ASSERT(m_client->hasWebView());
     if (m_frame->document()->pageDismissalEventBeingDispatched() != Document::NoDismissal)
         return;
 
     // We skip dispatching the beforeload event on the frame owner if we've already committed a real
     // document load because the event would leak subsequent activity by the frame which the parent
     // frame isn't supposed to learn. For example, if the child frame navigated to  a new URL, the
     // parent frame shouldn't learn the URL.
     const ResourceRequest& request = action.resourceRequest();
@@ skipping 211 matching lines @@
 {
     SandboxFlags flags = m_forcedSandboxFlags;
     if (Frame* parentFrame = m_frame->tree().parent())
         flags |= parentFrame->document()->sandboxFlags();
     if (HTMLFrameOwnerElement* ownerElement = m_frame->ownerElement())
         flags |= ownerElement->sandboxFlags();
     return flags;
 }
 
 } // namespace WebCore