Revert of Media Galleries Partial Deprecation: Remove image metadata & libexif.

chrome/utility/extensions/extensions_handler.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/utility/extensions/extensions_handler.h"
 
 #include <utility>
 
 #include "base/command_line.h"
 #include "base/path_service.h"
 #include "build/build_config.h"
 #include "chrome/common/chrome_utility_messages.h"
 #include "chrome/common/extensions/chrome_extensions_client.h"
 #include "chrome/common/extensions/chrome_utility_extensions_messages.h"
 #include "chrome/common/media_galleries/metadata_types.h"
 #include "chrome/utility/chrome_content_utility_client.h"
+#include "chrome/utility/media_galleries/image_metadata_extractor.h"
 #include "chrome/utility/media_galleries/ipc_data_source.h"
 #include "chrome/utility/media_galleries/media_metadata_parser.h"
 #include "content/public/common/content_paths.h"
 #include "content/public/utility/utility_thread.h"
 #include "extensions/common/extension.h"
 #include "extensions/common/extension_l10n_util.h"
 #include "extensions/common/extension_utility_messages.h"
 #include "extensions/utility/unpacker.h"
 #include "media/base/media.h"
 #include "ui/base/ui_base_switches.h"
@@ skipping 45 matching lines @@
 ExtensionsHandler::ExtensionsHandler(ChromeContentUtilityClient* utility_client)
     : utility_client_(utility_client) {
   ExtensionsClient::Set(ChromeExtensionsClient::GetInstance());
 }
 
 ExtensionsHandler::~ExtensionsHandler() {
 }
 
 // static
 void ExtensionsHandler::PreSandboxStartup() {
+  // Initialize libexif for image metadata parsing.
+  metadata::ImageMetadataExtractor::InitializeLibrary();
+
   // Initialize media libraries for media file validation.
   media::InitializeMediaLibrary();
 }
 
 bool ExtensionsHandler::OnMessageReceived(const IPC::Message& message) {
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(ExtensionsHandler, message)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_CheckMediaFile, OnCheckMediaFile)
     IPC_MESSAGE_HANDLER(ChromeUtilityMsg_ParseMediaMetadata,
                         OnParseMediaMetadata)
@@ skipping 129 matching lines @@
 
   std::string key_data;
   std::string error;
   wifi_service->GetKeyFromSystem(network_guid, &key_data, &error);
 
   Send(new ChromeUtilityHostMsg_GotWiFiCredentials(key_data, error.empty()));
 }
 #endif  // defined(OS_WIN)
 
 }  // namespace extensions