Make chrome/common compile in GN

chrome/common/extensions/api/BUILD.gn

Index: chrome/common/extensions/api/BUILD.gn
diff --git a/chrome/common/extensions/api/BUILD.gn b/chrome/common/extensions/api/BUILD.gn
new file mode 100644
index 0000000000000000000000000000000000000000..8c023f430e369aa3b8da7b2a3889995e7861b38d
--- /dev/null
+++ b/chrome/common/extensions/api/BUILD.gn
@@ -0,0 +1,73 @@
+# 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/features.gni")
+import("//build/json_schema.gni")
+
+gypi_values = exec_script(
+    "//build/gypi_to_gn.py",
+    [ rebase_path("api.gyp") ],
+    "scope",
+    [ "api.gyp" ])
+
+# GYP version: chrome/common/extensions/api/api.gyp:chrome_api
+group("api") {
+  # The GYP version has one target that does both the bundling and compiling
+  # over the same set of sources. In GN these actions are separate.
+  deps = [
+    ":api_bundle",
+    ":api_compile",
+  ]
+}
+
+# Common sources that are both bundled and compiled.
+if (is_android) {
+  # Should be eliminated. See crbug.com/305852.
+  schema_sources = gypi_values.android_schema_files
+} else {
+  schema_sources = gypi_values.main_schema_files
+  if (is_chromeos) {
+    schema_sources += gypi_values.chromeos_schema_files
+    if (is_chrome_branded) {
+      schema_sources += gypi_values.chromeos_branded_schema_files
+    }
+  }
+  if (enable_webrtc) {
+    schema_sources += gypi_values.webrtc_schema_files
+  }
+}
+
+schema_deps = [
+  # Different APIs include some headers crom chrome/common that in turn

[jamesr, 2014/06/20 21:45:08]

s/crom/from/

+  # include generated headers from these targets.
+  # TODO(brettw) this should be made unnecessary if possible.
+  "//components/metrics/proto",
+  "//device/serial",
+
+  "//content/public/browser",
+  "//skia",
+  "//sync",
+]
+if (is_chromeos) {
+  # deps += [ "<(DEPTH)/chrome/chrome.gyp:drive_proto" ]  TODO)GYP)

[jamesr, 2014/06/20 21:45:08]

s/TODO)GYP)/TODO(GYP)

+}
+
+json_schema_bundle("api_bundle") {
+  visibility = ":api"
+  sources = schema_sources
+  if (!is_android) {
+    sources += gypi_values.main_non_compiled_schema_files
+  }
+
+  root_namespace = "extensions::api"
+  deps = schema_deps + [ ":api_compile" ]
+

[jamesr, 2014/06/20 21:45:08]

extra newline

+}
+
+json_schema_compile("api_compile") {
+  visibility = ":*"
+  sources = schema_sources
+  root_namespace = "extensions::api"
+  deps = schema_deps
+}