Add Jpeg frame writer for test support.

webrtc/test/BUILD.gn

 # Copyright (c) 2014 The WebRTC project authors. All Rights Reserved.
 #
 # Use of this source code is governed by a BSD-style license
 # that can be found in the LICENSE file in the root of the source
 # tree. An additional intellectual property rights grant can be found
 # in the file PATENTS.  All contributing project authors may
 # be found in the AUTHORS file in the root of the source tree.
 
 import("../webrtc.gni")
 import("//build/config/ui.gni")
@@ skipping 189 matching lines @@
       "testsupport/mock/mock_frame_writer.h",
       "testsupport/y4m_frame_writer.cc",
       "testsupport/yuv_frame_reader.cc",
       "testsupport/yuv_frame_writer.cc",
     ]
 
     deps = [
       ":test_support",
       ":video_test_common",
       "..:webrtc_common",
+      "../api:video_frame_api",
       "../common_video",
       "../rtc_base:rtc_base_approved",
       "../system_wrappers",
       "//testing/gmock",
       "//testing/gtest",
       "//third_party/gflags",
     ]
 
+    if (!is_ios) {
+      deps += [ "//third_party:jpeg" ]
+      sources += [ "testsupport/jpeg_frame_writer.cc" ]
+    }
+
     public_deps = [
       ":fileutils",
     ]
 
     if (!build_with_chromium && is_clang) {
       # Suppress warnings from the Chromium Clang plugin (bugs.webrtc.org/163).
       suppressed_configs += [ "//build/config/clang:find_bad_constructs" ]
     }
 
     if (is_android) {
@@ skipping 379 matching lines @@
     java_files = [
       "android/org/webrtc/native_test/RTCNativeUnitTest.java",
       "android/org/webrtc/native_test/RTCNativeUnitTestActivity.java",
     ]
     deps = [
       "../rtc_base:base_java",
       "//testing/android/native_test:native_test_java",
     ]
   }
 }