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

chrome/utility/BUILD.gn

 # 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.
 
 import("//build/config/crypto.gni")
 import("//build/config/features.gni")
 import("//build/config/sysroot.gni")
 
 gypi_values = exec_script("//build/gypi_to_gn.py",
                           [ rebase_path("../chrome_utility.gypi") ],
@@ skipping 74 matching lines @@
     } else {
       sources += [ "image_writer/image_writer_stub.cc" ]
     }
 
     if (is_mac) {
       sources +=
           rebase_path(gypi_values.chrome_utility_mac_media_gallery_sources,
                       ".",
                       "..")
     }
+
+    # Linux should use system libexif
+    if (!is_linux || is_chromeos) {
+      # TODO(thestig): Properly support building on Linux and ChromeOS.
+      deps += [ "//third_party/libexif" ]
+    }
   }
 
   if (use_nss_certs) {
     sources += [
       "importer/nss_decryptor_system_nss.cc",
       "importer/nss_decryptor_system_nss.h",
     ]
     deps += [
       "//crypto",
       "//crypto:platform",
@@ skipping 10 matching lines @@
   if (safe_browsing_mode == 1) {
     sources +=
         rebase_path(gypi_values.chrome_utility_safe_browsing_sources, ".", "..")
     deps += [ "//third_party/zlib" ]
   }
 
   if (enable_pdf) {
     deps += [ "//pdf" ]
   }
 }