[PresentationAPI] Implementing send() from WebPresentationClient to the PresentationService.

content/browser/presentation/presentation_service_impl.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/browser/presentation/presentation_service_impl.h"
 
 #include <algorithm>
 
 #include "base/logging.h"
 #include "content/browser/presentation/presentation_type_converters.h"
@@ skipping 282 matching lines @@
 
   // Remove listener for old default presentation URL.
   delegate_->RemoveScreenAvailabilityListener(
       render_frame_host_->GetProcess()->GetID(),
       render_frame_host_->GetRoutingID(),
       old_it->second.get());
   availability_contexts_.erase(old_it);
   DoSetDefaultPresentationUrl(new_default_url, default_presentation_id);
 }
 
+void PresentationServiceImpl::SendMessage(
+    presentation::MessageRequestPtr message_request,
+    const SendMessageMojoCallback& callback) {
+  DCHECK(!message_request.is_null());
+  if (delegate_) {
+    // TODO(s.singapati): delegate_->SendMessage() is currently disabled
+    //because of invalid include path of presentation_message.h.
+    /*
+    delegate_->SendMessage(
+        render_frame_host_->GetProcess()->GetID(),
+        render_frame_host_->GetRoutingID(),
+        new MessageRequest(message_request.Pass()));
+        */
+  }
+
+  callback.Run();
+}
+
 void PresentationServiceImpl::CloseSession(
     const mojo::String& presentation_url,
     const mojo::String& presentation_id) {
   NOTIMPLEMENTED();
 }
 
 void PresentationServiceImpl::ListenForSessionStateChange(
     const SessionStateCallback& callback) {
   NOTIMPLEMENTED();
 }
@@ skipping 142 matching lines @@
     : presentation_url(presentation_url),
       presentation_id(presentation_id),
       callback(callback) {
 }
 
 PresentationServiceImpl::StartSessionRequest::~StartSessionRequest() {
 }
 
 }  // namespace content