media: Add experimental feature to enable Mojo CDM on desktop Chromium

media/BUILD.gn

Index: media/BUILD.gn
diff --git a/media/BUILD.gn b/media/BUILD.gn
index c4ac9221afc59ce551f22335499158af92d6db9d..b13af784a9d745e8c5e80cf13a62971104a0e367 100644
--- a/media/BUILD.gn
+++ b/media/BUILD.gn
@@ -511,6 +511,21 @@ component("media") {
       "device_monitors/device_monitor_udev.h",
     ]
   }
+
+  # TODO(xhwang): Move other library CDM related files to this block as well.
+  if (enable_pepper_cdms) {
+    deps += [
+      ":cdm_paths",
+
+      # TODO(xhwang): Remove this after Widevine specific logic is removed in
+      # CdmAdapterFactory. See http://crbug.com/510604
+      "//third_party/widevine/cdm:headers",
+    ]
+    sources += [
+      "cdm/cdm_adapter_factory.cc",
+      "cdm/cdm_adapter_factory.h",
+    ]
+  }
 }
 
 config("cdm_manager_implementation") {