GN Templates: Introduce rtc_shared_library

webrtc/build/webrtc.gni

 # 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("//build/config/arm.gni")
 import("//build/config/features.gni")
@@ skipping 187 matching lines @@
 set_defaults("rtc_executable") {
   configs = rtc_add_configs
   suppressed_configs = []
 }
 
 set_defaults("rtc_static_library") {
   configs = rtc_add_configs
   suppressed_configs = []
 }
 
+set_defaults("rtc_shared_library") {
+  configs = rtc_add_configs
+  suppressed_configs = []
+}
+
 template("rtc_test") {
   test(target_name) {
     forward_variables_from(invoker,
                            "*",
                            [
                              "configs",
                              "public_configs",
                              "suppressed_configs",
                            ])
     configs += invoker.configs
@@ skipping 60 matching lines @@
                            ])
     configs += invoker.configs
     configs -= rtc_remove_configs
     configs -= invoker.suppressed_configs
     public_configs = [ rtc_common_inherited_config ]
     if (defined(invoker.public_configs)) {
       public_configs += invoker.public_configs
     }
   }
 }
+
+template("rtc_shared_library") {
+  shared_library(target_name) {
+    forward_variables_from(invoker,
+                           "*",
+                           [
+                             "configs",
+                             "public_configs",
+                             "suppressed_configs",
+                           ])
+    configs += invoker.configs
+    configs -= rtc_remove_configs
+    configs -= invoker.suppressed_configs
+    public_configs = [ rtc_common_inherited_config ]
+    if (defined(invoker.public_configs)) {
+      public_configs += invoker.public_configs
+    }
+  }
+}