Adds navigator.registerProtocolHandler.

chrome/browser/custom_handlers/protocol_handler_registry.h

+#ifndef CHROME_BROWSER_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_H_
+#define CHROME_BROWSER_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_H_
+#pragma once
+
+#include "base/ref_counted.h"
+#include "chrome/browser/profiles/profile.h"
+#include "net/url_request/url_request_job.h"
+#include "net/url_request/url_request.h"
+#include "base/values.h"
+
+#include <string>
+#include <iostream>
+#include <map>
+
+
+// ProtocolHandler -------------------------------------------------------------
+
+// A single tuple of (protocol, url, title) that indicates how URLs of the
+// given protocol should be rewritten to be handled.
+
+class ProtocolHandler {
+public:

[tony, 2011/02/07 20:51:45]

Nit: one space indent

[koz (OOO until 15th September), 2011/02/13 22:33:48]

Done.

+  static ProtocolHandler* CreateProtocolHandler(const std::string& protocol, const std::string& url, const std::string& title);

[tony, 2011/02/07 20:51:45]

Nit: 80 cols and lots of other style violations.  See the errors on codereview
or run the presubmit scripts.

[koz (OOO until 15th September), 2011/02/13 22:33:48]

Done.

+  static ProtocolHandler* CreateProtocolHandler(const DictionaryValue* value);
+  GURL TranslateUrl(const GURL& url);
+  Value* Encode();
+  const std::string& protocol() { return protocol_; }

[tony, 2011/02/07 20:51:45]

Nit: I am skeptical of the benefits of returning references.  I would just
return a copy.

[koz (OOO until 15th September), 2011/02/13 22:33:48]

Done.

+  const std::string& url() { return url_;}
+  const std::string& title() { return title_; }
+private:
+  ProtocolHandler(const std::string& protocol, const std::string& url, const std::string& title);
+  std::string SpliceInto(const std::string& templ, const std::string& value);
+  const std::string protocol_;
+  const std::string url_;
+  const std::string title_;
+};
+
+typedef std::map<std::string, ProtocolHandler*> ProtocolHandlerMap;
+
+// ProtocolHandlerRegistry -----------------------------------------------------
+
+// This is where handlers for protocols registered with
+// navigator.registerProtocolHandler() are registered. Each Profile owns an
+// instance of this class, which is initialized on browser start through
+// Profile::InitRegisteredProtocolHandlers(), and they should be the only
+// instances of this class.
+
+class ProtocolHandlerRegistry : public base::RefCounted<ProtocolHandlerRegistry> {
+public:
+  ProtocolHandlerRegistry(Profile* profile);
+
+  // Called when the user accepts the registration of a given protocol handler.
+  void OnAcceptRegisterProtocolHandler(ProtocolHandler* handler);
+
+  // Called when the user denies the registration of a given protocol handler.
+  void OnDenyRegisterProtocolHandler(ProtocolHandler* handler);
+
+  // Loads a user's registered protocol handlers.
+  void Load();
+
+  // Saves a user's registered protocol handlers.
+  void Save();
+
+  // URLRequestFactory for use with URLRequest::RegisterProtocolFactory().
+  // Redirects any URLRequests for which there is a matching protocol handler.
+  static net::URLRequestJob* Factory(net::URLRequest* request, const std::string& scheme);
+
+  // Registers the preferences that we store registered protocol handlers in.
+  static void RegisterPrefs(PrefService* prefService);
+
+private:
+  // Returns a JSON dictionary of protocols to protocol handlers.

[tony, 2011/02/07 20:51:45]

Nit: Maybe mention that the caller is responsible for deleting the returned
value.

[koz (OOO until 15th September), 2011/02/13 22:33:48]

Done.

+  Value* Encode();
+
+  // Registers a new protocol handler.
+  void RegisterProtocolHandler(ProtocolHandler* handler);
+
+  // Creates a URL request job for the given request if there is a matching
+  // protocol handler, returns NULL otherwise.
+  net::URLRequestJob* CreateJob(net::URLRequest* request, const std::string& scheme) const;
+
+  // Registers a new protocol handler from a JSON dictionary.
+  void RegisterHandlerFromValue(const DictionaryValue* value);
+
+  // Map from protocols (strings) to protocol handlers.
+  ProtocolHandlerMap protocolHandlers_;
+
+  // The Profile that owns this ProtocolHandlerRegistry.
+  Profile* profile_;
+
+  friend class base::RefCounted<ProtocolHandlerRegistry>;
+  ~ProtocolHandlerRegistry() {};

[tony, 2011/02/07 20:51:45]

DISALLOW_COPY_AND_ASSIGN?

[koz (OOO until 15th September), 2011/02/13 22:33:48]

Done.

+};
+#endif  // CHROME_BROWSER_CUSTOM_HANDLERS_PROTOCOL_HANDLER_REGISTRY_H_