Defer media playback in background tabs.

chrome/chrome_renderer.gypi

Index: chrome/chrome_renderer.gypi
diff --git a/chrome/chrome_renderer.gypi b/chrome/chrome_renderer.gypi
index 281061d6014b070d87f3e7c1a98d91fd80abd56d..e835b6179a9d6b6dc7ddcff1a18d410944aa3210 100644
--- a/chrome/chrome_renderer.gypi
+++ b/chrome/chrome_renderer.gypi
@@ -156,10 +156,6 @@
       'renderer/resources/extensions/tts_custom_bindings.js',
       'renderer/resources/extensions/tts_engine_custom_bindings.js',
     ],
-    'chrome_renderer_non_android_sources': [
-      'renderer/prerender/prerender_media_load_deferrer.cc',
-      'renderer/prerender/prerender_media_load_deferrer.h',
-    ],
     'chrome_renderer_plugin_sources': [
       'renderer/pepper/chrome_renderer_pepper_host_factory.cc',
       'renderer/pepper/chrome_renderer_pepper_host_factory.h',
@@ -387,11 +383,6 @@
             '<@(chrome_renderer_full_printing_sources)',
           ],
         }],
-        ['OS!="android"', {
-          'sources': [
-            '<@(chrome_renderer_non_android_sources)',
-          ],
-        }],
         ['OS=="win"', {
           'dependencies': [
             '../components/components.gyp:dom_distiller_core',  # Needed by chrome_content_renderer_client.cc.