Remove NPAPI command line flags entirely.

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 dfa9b809acbccce832099e270870f26946239cab..63f3f298bac2eced5055193bc41ad6b38e10daaf 100644
--- a/content/shell/app/shell_main_delegate.cc
+++ b/content/shell/app/shell_main_delegate.cc
@@ -202,9 +202,6 @@ bool ShellMainDelegate::BasicStartupComplete(int* exit_code) {
     command_line.AppendSwitchASCII(switches::kHostResolverRules,
                                    "MAP *.test 127.0.0.1");
 
-    // TODO(wfh): crbug.com/295137 Remove this when NPAPI is gone.
-    command_line.AppendSwitch(switches::kEnableNpapiForTesting);
-
     // Unless/until WebM files are added to the media layout tests, we need to
     // avoid removing MP4/H264/AAC so that layout tests can run on Android.
 #if !defined(OS_ANDROID)