Allow tracing to console everywhere.

content/child/child_thread.cc

Index: content/child/child_thread.cc
diff --git a/content/child/child_thread.cc b/content/child/child_thread.cc
index 68c338a8276faa512743d2b61f1ab68e14466b92..f5061bfe16c5432c278bcd7bc0b3f0d4a751b52b 100644
--- a/content/child/child_thread.cc
+++ b/content/child/child_thread.cc
@@ -5,6 +5,7 @@
 #include "content/child/child_thread.h"
 
 #include "base/allocator/allocator_extension.h"
+#include "base/base_switches.h"
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
 #include "base/message_loop.h"
@@ -150,6 +151,19 @@ void ChildThread::Init() {
     channel_->AddFilter(new SuicideOnChannelErrorFilter());
 #endif
 
+  if (CommandLine::ForCurrentProcess()->HasSwitch(switches::kTraceToConsole)) {
+    std::string category_string =
+        CommandLine::ForCurrentProcess()->GetSwitchValueASCII(
+            switches::kTraceToConsole);
+
+    if (!category_string.size())
+      category_string = "*";
+
+    base::debug::TraceLog::GetInstance()->SetEnabled(
+        base::debug::CategoryFilter(category_string),
+        base::debug::TraceLog::ECHO_TO_CONSOLE);
+  }
+
   base::MessageLoop::current()->PostDelayedTask(
       FROM_HERE,
       base::Bind(&ChildThread::EnsureConnected,