Split //ios/chrome/browser in multiple targets.

ios/chrome/browser/suggestions/BUILD.gn

Index: ios/chrome/browser/suggestions/BUILD.gn
diff --git a/ios/chrome/browser/suggestions/BUILD.gn b/ios/chrome/browser/suggestions/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..7043f0aba9705092b35fdeaf599ce8827861ef91
--- /dev/null
+++ b/ios/chrome/browser/suggestions/BUILD.gn
@@ -0,0 +1,46 @@
+# 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.
+
+source_set("suggestions") {
+  sources = [
+    "image_fetcher_impl.h",
+    "image_fetcher_impl.mm",
+    "ios_image_decoder_impl.h",
+    "ios_image_decoder_impl.mm",
+    "suggestions_service_factory.h",
+    "suggestions_service_factory.mm",
+  ]
+  deps = [
+    "//base",
+    "//components/browser_sync",
+    "//components/image_fetcher",
+    "//components/keyed_service/ios",
+    "//components/leveldb_proto",
+    "//components/signin/core/browser",
+    "//components/suggestions",
+    "//ios/chrome/browser/browser_state",
+    "//ios/chrome/browser/net",
+    "//ios/chrome/browser/net",
+    "//ios/chrome/browser/signin",
+    "//ios/chrome/browser/sync",
+    "//ios/chrome/browser/webp_transcode",
+    "//ios/web",
+    "//net",
+    "//skia",
+    "//ui/gfx",
+  ]
+}
+
+source_set("unit_tests") {
+  testonly = true
+  sources = [
+    "ios_image_decoder_impl_unittest.mm",
+  ]
+  deps = [
+    ":suggestions",
+    "//base",
+    "//testing/gtest",
+    "//ui/gfx",
+  ]
+}