Win32k lockdown: move to chrome://flags, add UMA, add finch

content/renderer/pepper/content_renderer_pepper_host_factory.cc

Index: content/renderer/pepper/content_renderer_pepper_host_factory.cc
diff --git a/content/renderer/pepper/content_renderer_pepper_host_factory.cc b/content/renderer/pepper/content_renderer_pepper_host_factory.cc
index 24d48a50df9fa731f4f58b16945e9a8fd54c32ce..383d8323e0d0f2039e909cbbcec4d3d670fd1041 100644
--- a/content/renderer/pepper/content_renderer_pepper_host_factory.cc
+++ b/content/renderer/pepper/content_renderer_pepper_host_factory.cc
@@ -158,8 +158,7 @@ scoped_ptr<ResourceHost> ContentRendererPepperHostFactory::CreateResourceHost(
       // TODO(ananta)
       // Look into whether this causes a loss of functionality. From cursory
       // testing things seem to work well.
-      if (CommandLine::ForCurrentProcess()->HasSwitch(
-              switches::kEnableWin32kRendererLockDown) &&
+      if (switches::IsWin32kRendererLockdownEnabled() &&
           base::win::GetVersion() >= base::win::VERSION_WIN8) {
         image_type = ppapi::PPB_ImageData_Shared::SIMPLE;
       }