[DevTools] Make sendMessageToBackend one of embedder messages.

chrome/browser/devtools/devtools_ui_bindings.cc

 // Copyright 2014 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 "chrome/browser/devtools/devtools_ui_bindings.h"
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/json/json_writer.h"
 #include "base/strings/string_number_conversions.h"
@@ skipping 612 matching lines @@
   if (enabled) {
     remote_targets_handler_ = DevToolsTargetsUIHandler::CreateForAdb(
         base::Bind(&DevToolsUIBindings::DevicesUpdated,
                    base::Unretained(this)),
         profile_);
   } else {
     remote_targets_handler_.reset();
   }
 }
 
+void DevToolsUIBindings::SendMessageToBrowser(const std::string& message) {
+  content::DevToolsManager::GetInstance()->DispatchOnInspectorBackend(
+      this, message);
+}
+
 void DevToolsUIBindings::DeviceCountChanged(int count) {
   base::FundamentalValue value(count);
   CallClientFunction("InspectorFrontendAPI.deviceCountUpdated", &value, NULL,
                      NULL);
 }
 
 void DevToolsUIBindings::DevicesUpdated(
     const std::string& source,
     const base::ListValue& targets) {
   CallClientFunction("InspectorFrontendAPI.devicesUpdated", &targets, NULL,
@@ skipping 161 matching lines @@
   web_contents_->GetMainFrame()->ExecuteJavaScript(javascript);
 }
 
 void DevToolsUIBindings::DocumentOnLoadCompletedInMainFrame() {
   // Call delegate first - it seeds importants bit of information.
   delegate_->OnLoadCompleted();
 
   UpdateTheme();
   AddDevToolsExtensionsToClient();
 }