Introduce the image_decoder service

services/image_decoder/BUILD.gn

Index: services/image_decoder/BUILD.gn
diff --git a/services/image_decoder/BUILD.gn b/services/image_decoder/BUILD.gn
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+++ b/services/image_decoder/BUILD.gn
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+# Copyright 2016 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("//services/service_manager/public/cpp/service.gni")
+import("//services/service_manager/public/service_manifest.gni")
+
+source_set("lib") {
+  sources = [
+    "image_decoder_impl.cc",
+    "image_decoder_impl.h",
+    "image_decoder_service.cc",
+    "image_decoder_service.h",
+  ]
+
+  deps = [
+    "//base",
+    "//content/public/child",
+    "//mojo/public/cpp/bindings",
+    "//skia",
+    "//ui/gfx",
+    "//ui/gfx/geometry",
+  ]
+
+  public_deps = [
+    "//services/image_decoder/public/interfaces",
+    "//services/service_manager/public/cpp",
+  ]
+
+  data_deps = [
+    ":manifest",
+  ]
+}
+
+source_set("tests") {
+  testonly = true
+
+  sources = [
+    "image_decoder_impl_unittest.cc",
+  ]
+
+  deps = [
+    ":lib",
+    "//base",
+    "//gin",
+    "//gin:gin_test",
+    "//skia",
+    "//testing/gtest",
+    "//third_party/WebKit/public:blink",
+    "//ui/gfx",
+  ]
+
+  configs += [ "//v8:external_startup_data" ]
+}
+
+service_manifest("manifest") {
+  name = "image_decoder"
+  source = "manifest.json"
+}