content: Remove dump-render-tree switch.

content/shell/app/shell_main_delegate.cc

Index: content/shell/app/shell_main_delegate.cc
diff --git a/content/shell/app/shell_main_delegate.cc b/content/shell/app/shell_main_delegate.cc
index d9601d5e1158170118d38a8b4c05db4da6b7a20e..24525e8c8a3df49bccebe4286bf7d5cfaa86548d 100644
--- a/content/shell/app/shell_main_delegate.cc
+++ b/content/shell/app/shell_main_delegate.cc
@@ -121,12 +121,6 @@ ShellMainDelegate::~ShellMainDelegate() {
 bool ShellMainDelegate::BasicStartupComplete(int* exit_code) {
   base::CommandLine& command_line = *base::CommandLine::ForCurrentProcess();
 
-  // "dump-render-tree" has been renamed to "run-layout-test", but the old
-  // flag name is still used in some places, so this check will remain until
-  // it is phased out entirely.
-  if (command_line.HasSwitch(switches::kDumpRenderTree))
-    command_line.AppendSwitch(switches::kRunLayoutTest);
-
 #if defined(OS_WIN)
   // Enable trace control and transport through event tracing for Windows.
   logging::LogEventProvider::Initialize(kContentShellProviderName);