Remove NPAPI command line flags entirely.

content/browser/plugin_service_impl.cc

Index: content/browser/plugin_service_impl.cc
diff --git a/content/browser/plugin_service_impl.cc b/content/browser/plugin_service_impl.cc
index eadffcc5d6eb2f1504669960abe4e6db698c1e0d..2503529209838e6bf295361bd480002c3a72bf72 100644
--- a/content/browser/plugin_service_impl.cc
+++ b/content/browser/plugin_service_impl.cc
@@ -794,27 +794,21 @@ void PluginServiceImpl::GetInternalPlugins(
 }
 
 bool PluginServiceImpl::NPAPIPluginsSupported() {
-  static bool command_line_checked = false;
-
-  if (!command_line_checked) {
 #if defined(OS_WIN) || defined(OS_MACOSX)
-    const base::CommandLine* command_line =
-        base::CommandLine::ForCurrentProcess();
-    npapi_plugins_enabled_ =
-        command_line->HasSwitch(switches::kEnableNpapiForTesting);
+  npapi_plugins_enabled_ =
+      content::GetContentClient()->browser()->IsNPAPIEnabled();

[jam, 2015/07/20 16:36:22]

nit: no content::

[Will Harris, 2015/07/20 16:54:50]

Done, also below where I stole this from :)

 #if defined(OS_WIN)
-    // NPAPI plugins don't play well with Win32k renderer lockdown.
-    if (npapi_plugins_enabled_)
-      DisableWin32kRendererLockdown();
+  // NPAPI plugins don't play well with Win32k renderer lockdown.
+  if (npapi_plugins_enabled_)
+    DisableWin32kRendererLockdown();
 #endif
-    NPAPIPluginStatus status =
-        npapi_plugins_enabled_ ? NPAPI_STATUS_ENABLED : NPAPI_STATUS_DISABLED;
+  NPAPIPluginStatus status =
+      npapi_plugins_enabled_ ? NPAPI_STATUS_ENABLED : NPAPI_STATUS_DISABLED;
 #else
-    NPAPIPluginStatus status = NPAPI_STATUS_UNSUPPORTED;
+  NPAPIPluginStatus status = NPAPI_STATUS_UNSUPPORTED;
 #endif
-    UMA_HISTOGRAM_ENUMERATION("Plugin.NPAPIStatus", status,
-        NPAPI_STATUS_ENUM_COUNT);
-  }
+  UMA_HISTOGRAM_ENUMERATION("Plugin.NPAPIStatus", status,
+                            NPAPI_STATUS_ENUM_COUNT);
 
   return npapi_plugins_enabled_;
 }