Make blink media logging verbose on Chromecast

third_party/WebKit/Source/core/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/chrome_build.gni")
+import("//build/config/chromecast_build.gni")
 import("//build/config/ui.gni")
 import("//third_party/WebKit/Source/bindings/bindings.gni")
 import("//third_party/WebKit/Source/bindings/core/v8/generated.gni")
 import("//third_party/WebKit/Source/bindings/modules/modules.gni")
 import("//third_party/WebKit/Source/bindings/modules/v8/generated.gni")
 import("//third_party/WebKit/Source/bindings/scripts/scripts.gni")
 import("//third_party/WebKit/Source/config.gni")
 import("//third_party/WebKit/Source/core/core.gni")
 import("//third_party/WebKit/Source/build/scripts/scripts.gni")
 import("//third_party/WebKit/Source/platform/platform_generated.gni")
@@ skipping 28 matching lines @@
 
 # Config for code that builds as part of core.
 config("config") {
   defines = [ "BLINK_CORE_IMPLEMENTATION=1" ]
 
   cflags = []
   if (is_win) {
     # Suppress __declspec(dllexport)/extern conflict (C4910).
     cflags += [ "/wd4910" ]
   }
+
+  if (is_chromecast) {
+    defines += [ "BLINK_MEDIA_LOG=DVLOG(2)" ]
+  }
 }
 core_config_add += [ ":config" ]
 
 config("core_include_dirs") {
   include_dirs = [
     "..",
     "$root_gen_dir/blink",
   ]
   if (is_android && use_openmax_dl_fft) {
     include_dirs += [ "//third_party/openmax_dl" ]
@@ skipping 1014 matching lines @@
     "$blink_core_output_dir/{{source_name_part}}.h",
   ]
   args = [
     "{{source}}",
     rel_blink_core_gen_dir,
     bison_exe,
   ]
 
   deps = make_core_generated_deps
 }