Convert utility process ParseMediaMetadata blob reading IPC to mojo

chrome/utility/chrome_content_utility_client.cc

 // Copyright (c) 2012 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/utility/chrome_content_utility_client.h"
 
 #include <stddef.h>
 #include <utility>
 
 #include "base/command_line.h"
@@ skipping 192 matching lines @@
 #if defined(OS_CHROMEOS)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_CreateZipFile, OnCreateZipFile)
 #endif
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
 
   if (handled)
     return true;
 
   for (auto* handler : handlers_) {
-    // At least one of the utility process handlers adds a new handler to
-    // |handlers_| when it handles a message. This causes any iterator over
-    // |handlers_| to become invalid. Therefore, it is necessary to break the
-    // loop at this point instead of evaluating it as a loop condition (if the
-    // for loop was using iterators explicitly, as originally done).
     if (handler->OnMessageReceived(message))
       return true;
   }
 
   return false;
 }
 
 void ChromeContentUtilityClient::ExposeInterfacesToBrowser(
     service_manager::InterfaceRegistry* registry) {
-  const bool running_elevated =
+  const bool utility_process_running_elevated =
       base::CommandLine::ForCurrentProcess()->HasSwitch(
           switches::kUtilityProcessRunningElevated);
 #if BUILDFLAG(ENABLE_EXTENSIONS)
-  ChromeContentUtilityClient* utility_client = this;
   extensions::ExtensionsHandler::ExposeInterfacesToBrowser(
-      registry, utility_client, running_elevated);
+      registry, utility_process_running_elevated);
 #endif
   // If our process runs with elevated privileges, only add elevated Mojo
   // services to the interface registry.
-  if (running_elevated)
+  if (utility_process_running_elevated)
     return;
 
   registry->AddInterface(base::Bind(&FilePatcherImpl::Create));
 #if !defined(OS_ANDROID)
   registry->AddInterface<net::interfaces::ProxyResolverFactory>(
       base::Bind(CreateProxyResolverFactory));
   registry->AddInterface(base::Bind(CreateResourceUsageReporter));
   registry->AddInterface(base::Bind(&ProfileImportHandler::Create));
 #endif
   registry->AddInterface(
       base::Bind(&safe_json::SafeJsonParserMojoImpl::Create));
 #if defined(OS_WIN)
   registry->AddInterface(base::Bind(&ShellHandlerImpl::Create));
 #endif
 }
 
 void ChromeContentUtilityClient::RegisterServices(StaticServiceMap* services) {
   content::ServiceInfo image_decoder_info;
   image_decoder_info.factory = base::Bind(&CreateImageDecoderService);
   services->insert(
       std::make_pair(image_decoder::mojom::kServiceName, image_decoder_info));
 }
 
-void ChromeContentUtilityClient::AddHandler(
-    std::unique_ptr<UtilityMessageHandler> handler) {
-  handlers_.push_back(std::move(handler));
-}
-
 // static
 void ChromeContentUtilityClient::PreSandboxStartup() {
 #if BUILDFLAG(ENABLE_EXTENSIONS)
   extensions::ExtensionsHandler::PreSandboxStartup();
 #endif
 }
 
 #if defined(OS_CHROMEOS)
 void ChromeContentUtilityClient::OnCreateZipFile(
     const base::FilePath& src_dir,
@@ skipping 45 matching lines @@
   safe_browsing::zip_analyzer::Results results;
   safe_browsing::dmg::AnalyzeDMGFile(
       IPC::PlatformFileForTransitToFile(dmg_file), &results);
   Send(new ChromeUtilityHostMsg_AnalyzeDmgFileForDownloadProtection_Finished(
       results));
   ReleaseProcessIfNeeded();
 }
 #endif  // defined(OS_MACOSX)
 
 #endif  // defined(FULL_SAFE_BROWSING)