Expose WebCore log channels on the chrome command line

chrome/worker/worker_thread.cc

Index: chrome/worker/worker_thread.cc
diff --git a/chrome/worker/worker_thread.cc b/chrome/worker/worker_thread.cc
index 90bf9b67874248f9a28c5422877ffa41e62e0206..951a80fb97cc3f9649283119009a94d4b4ac37df 100644
--- a/chrome/worker/worker_thread.cc
+++ b/chrome/worker/worker_thread.cc
@@ -20,6 +20,7 @@
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebDatabase.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebRuntimeFeatures.h"
+#include "webkit/glue/webkit_glue.h"
 
 using WebKit::WebRuntimeFeatures;
 
@@ -41,6 +42,9 @@ WorkerThread::WorkerThread() {
 
   const CommandLine& command_line = *CommandLine::ForCurrentProcess();
 
+  webkit_glue::EnableWebCoreLogChannels(
+      command_line.GetSwitchValueASCII(switches::kWebCoreLogChannels));
+
   WebKit::WebRuntimeFeatures::enableDatabase(
       !command_line.HasSwitch(switches::kDisableDatabases));