Add cross-origin loading of NEXEs for MIME type handlers

src/trusted/plugin/ppapi/plugin_ppapi.h

 /*
  * Copyright 2010 The Native Client Authors. All rights reserved.
  * Use of this source code is governed by a BSD-style license that can
  * be found in the LICENSE file.
  */
 
 // PPAPI-based implementation of the interface for a NaCl plugin instance.
 
 #ifndef NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PPAPI_PLUGIN_PPAPI_H_
 #define NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PPAPI_PLUGIN_PPAPI_H_
@@ skipping 73 matching lines @@
   bool UrlAsNaClDesc(const nacl::string& url, pp::Var js_callback);
   // Requests a URL asynchronously resulting in a call to pp_callback with
   // a PP_Error indicating status. On success an open file descriptor
   // corresponding to the url body is recorded for further lookup.
   // This is used by SRPC-based StreamAsFile().
   bool StreamAsFile(const nacl::string& url, PP_CompletionCallback pp_callback);
   // Returns an open POSIX file descriptor retrieved by StreamAsFile()
   // or NACL_NO_FILE_DESC. The caller must take ownership of the descriptor.
   int32_t GetPOSIXFileDesc(const nacl::string& url);
 
+  // The MIME type used to instantiate this instance of the NaCl plugin.
+  // Typically, the MIME type will be application/x-nacl.  However, if the NEXE
+  // is being used as a content type handler for another content type (such as
+  // PDF), then this function will return that type.
+  const nacl::string& mime_type() const { return mime_type_; }
+
+  // The default MIME type for the NaCl plugin.
+  static const char* const kNaClMIMEType;
+
  private:
   NACL_DISALLOW_COPY_AND_ASSIGN(PluginPpapi);
   // Prevent construction and destruction from outside the class:
   // must use factory New() method instead.
   explicit PluginPpapi(PP_Instance instance);
   // The browser will invoke the destructor via the pp::Instance
   // pointer to this object, not from base's Delete().
   virtual ~PluginPpapi();
 
   // File download support.  |nexe_downloader_| can be opened with a specific
@@ skipping 70 matching lines @@
   // (InitializeModule, Shutdown, and GetInterface).
   // TODO(sehr): this should be a scoped_ptr for shutdown.
   ppapi_proxy::BrowserPpp* ppapi_proxy_;
 
   // If we get a DidChangeView event before the nexe is loaded, we store it and
   // replay it to nexe after it's loaded.
   bool replayDidChangeView;
   pp::Rect replayDidChangeViewPosition;
   pp::Rect replayDidChangeViewClip;
 
+  nacl::string mime_type_;
+
   // Keep track of the FileDownloaders created to fetch urls.
   std::set<FileDownloader*> url_downloaders_;
   // Keep track of file descriptors opened by StreamAsFile().
   // These are owned by the browser.
   std::map<nacl::string, int32_t> url_fd_map_;
 };
 
 }  // namespace plugin
 
 #endif  // NATIVE_CLIENT_SRC_TRUSTED_PLUGIN_PPAPI_PLUGIN_PPAPI_H_