Use verbose media logging on Chromecast

content/renderer/BUILD.gn

Index: content/renderer/BUILD.gn
diff --git a/content/renderer/BUILD.gn b/content/renderer/BUILD.gn
index 3feab6ddadf7ab0fbf316513233155635e07d4d8..e6ee5b6d8073a502c347af58e5569861231b5342 100644
--- a/content/renderer/BUILD.gn
+++ b/content/renderer/BUILD.gn
@@ -2,6 +2,7 @@
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
+import("//build/config/chromecast_build.gni")
 import("//build/config/features.gni")
 import("//build/config/ui.gni")
 import("//media/media_options.gni")
@@ -901,6 +902,10 @@ target(link_target_type, "renderer") {
   if (enable_ipc_fuzzer) {
     configs += [ "//tools/ipc_fuzzer:ipc_fuzzer_config" ]
   }
+
+  if (is_chromecast) {
+    defines += [ "MEDIA_EVENT_LOG_UTILITY=VLOG(1)" ]
+  }
 }
 
 # See comment at the top of //content/BUILD.gn for how this works.