Defer media playback in background tabs.

chrome/renderer/BUILD.gn

 # 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("//tools/grit/grit_rule.gni")
 
 gypi_values = exec_script("//build/gypi_to_gn.py",
                           [ rebase_path("../chrome_renderer.gypi") ],
                           "scope",
@@ skipping 159 matching lines @@
   }
   if (is_win) {
     deps += [ "//third_party/wtl" ]
   }
   if (is_android) {
     sources -= [
       "spellchecker/hunspell_engine.cc",
       "spellchecker/hunspell_engine.h",
     ]
   }
-  if (!is_android) {
-    sources +=
-        rebase_path(gypi_values.chrome_renderer_non_android_sources, ".", "..")
-  }
 }
 
 # In GYP this is part of test_support_common.
 source_set("test_support") {
   testonly = true
   visibility = [ "//chrome/test:test_support" ]
 
   sources = [
     "chrome_mock_render_thread.cc",
     "chrome_mock_render_thread.h",
@@ skipping 14 matching lines @@
     deps += [ "//chrome/service" ]
   }
 
   if (enable_webrtc) {
     sources += [
       "media/mock_webrtc_logging_message_filter.cc",
       "media/mock_webrtc_logging_message_filter.h",
     ]
   }
 }