Expose WebCore log channels on the chrome command line

chrome/browser/in_process_webkit/webkit_thread.cc

Index: chrome/browser/in_process_webkit/webkit_thread.cc
diff --git a/chrome/browser/in_process_webkit/webkit_thread.cc b/chrome/browser/in_process_webkit/webkit_thread.cc
index b2b469ba332a1311a4e7bf2bfa25f12bc83b802e..24574b20ea846bdcb86851b4ac562fe15152b5c0 100644
--- a/chrome/browser/in_process_webkit/webkit_thread.cc
+++ b/chrome/browser/in_process_webkit/webkit_thread.cc
@@ -8,6 +8,7 @@
 #include "chrome/browser/in_process_webkit/browser_webkitclient_impl.h"
 #include "chrome/common/chrome_switches.h"
 #include "third_party/WebKit/Source/WebKit/chromium/public/WebKit.h"
+#include "webkit/glue/webkit_glue.h"
 
 WebKitThread::WebKitThread() {
 }
@@ -46,6 +47,10 @@ void WebKitThread::InternalWebKitThread::Init() {
   DCHECK(!webkit_client_.get());
   webkit_client_.reset(new BrowserWebKitClientImpl);
   WebKit::initialize(webkit_client_.get());
+  webkit_glue::EnableWebCoreLogChannels(
+      CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+          switches::kWebCoreLogChannels));
+
   // If possible, post initialization tasks to this thread (rather than doing
   // them now) so we don't block the UI thread any longer than we have to.
 }