Remove an unneccessary special case for the main resource from InspectorPageAgent

Source/core/inspector/InspectorPageAgent.cpp

 /*
  * Copyright (C) 2011 Google 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.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 230 matching lines @@
     }
 
     if (cachedResource) {
         switch (cachedResource->type()) {
         case Resource::CSSStyleSheet:
             *result = toCSSStyleSheetResource(cachedResource)->sheetText(false);
             return true;
         case Resource::Script:
             *result = toScriptResource(cachedResource)->script();
             return true;
-        case Resource::MainResource:
-            return false;
         case Resource::Raw: {
             SharedBuffer* buffer = cachedResource->resourceBuffer();
             if (!buffer)
                 return false;
             OwnPtr<TextResourceDecoder> decoder = createXHRTextDecoder(cachedResource->response().mimeType(), cachedResource->response().textEncodingName());
             String content = decoder->decode(buffer->data(), buffer->size());
             *result = content + decoder->flush();
             return true;
         }
         default:
@@ skipping 1124 matching lines @@
 bool InspectorPageAgent::getEditedResourceContent(const String& url, String* content)
 {
     if (!m_editedResourceContent.contains(url))
         return false;
     *content = m_editedResourceContent.get(url);
     return true;
 }
 
 } // namespace WebCore