Adding the Copresence RpcHandler and HttpPost helper.

components/copresence/handlers/directive_handler.h

Index: components/copresence/handlers/directive_handler.h
diff --git a/components/copresence/handlers/directive_handler.h b/components/copresence/handlers/directive_handler.h
index 8a415f1dbb77cda9b70dfce35cd6ad2550d1e822..2dd6a8863d068b66ac48cb9a296dc4899f93f5a5 100644
--- a/components/copresence/handlers/directive_handler.h
+++ b/components/copresence/handlers/directive_handler.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef COMPONENTS_COPRESENCE_HANDLERS_DIRECTIVE_HANDLER_
-#define COMPONENTS_COPRESENCE_HANDLERS_DIRECTIVE_HANDLER_
+#ifndef COMPONENTS_COPRESENCE_HANDLERS_DIRECTIVE_HANDLER_H_
+#define COMPONENTS_COPRESENCE_HANDLERS_DIRECTIVE_HANDLER_H_
 
 #include <string>
 
@@ -18,18 +18,25 @@ namespace copresence {
 class AudioDirectiveHandler;
 class Directive;
 
-// The directive handler manages transmit and receive directives given to it
-// by the client.
+// The directive handler manages transmit and receive directives
+// given to it by the client.
 class DirectiveHandler {
  public:
-  DirectiveHandler(const AudioRecorder::DecodeSamplesCallback& decode_cb,
-                   const AudioDirectiveList::EncodeTokenCallback& encode_cb);
-  ~DirectiveHandler();
+  DirectiveHandler();
+  virtual ~DirectiveHandler();
+
+  // Initialize the |audio_handler_| with the appropriate callbacks.
+  // This function must be called before any others.
+  // TODO(ckehoe): Instead of this, use a static Create() method
+  //               and make the constructor private.
+  virtual void Initialize(
+      const AudioRecorder::DecodeSamplesCallback& decode_cb,
+      const AudioDirectiveList::EncodeTokenCallback& encode_cb);
 
   // Adds a directive to handle.
-  void AddDirective(const copresence::Directive& directive);
+  virtual void AddDirective(const copresence::Directive& directive);
   // Removes any directives associated with the given operation id.
-  void RemoveDirectives(const std::string& op_id);
+  virtual void RemoveDirectives(const std::string& op_id);
 
  private:
   scoped_ptr<AudioDirectiveHandler> audio_handler_;
@@ -39,4 +46,4 @@ class DirectiveHandler {
 
 }  // namespace copresence
 
-#endif  // COMPONENTS_COPRESENCE_HANDLERS_DIRECTIVE_HANDLER_
+#endif  // COMPONENTS_COPRESENCE_HANDLERS_DIRECTIVE_HANDLER_H_