Pepper: Send dev/canary channel status to plugins.

components/nacl/browser/nacl_process_host.cc

Index: components/nacl/browser/nacl_process_host.cc
diff --git a/components/nacl/browser/nacl_process_host.cc b/components/nacl/browser/nacl_process_host.cc
index e44df8983c3ffb3b10462746e3eca25fc0ed93d9..2d154f38d986a846756618da10884de75f8dd870 100644
--- a/components/nacl/browser/nacl_process_host.cc
+++ b/components/nacl/browser/nacl_process_host.cc
@@ -36,6 +36,7 @@
 #include "content/public/browser/browser_child_process_host.h"
 #include "content/public/browser/browser_ppapi_host.h"
 #include "content/public/browser/child_process_data.h"
+#include "content/public/browser/plugin_service.h"
 #include "content/public/common/child_process_host.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/process_type.h"
@@ -802,6 +803,8 @@ void NaClProcessHost::OnPpapiChannelCreated(
     ppapi::PpapiNaClChannelArgs args;
     args.off_the_record = nacl_host_message_filter_->off_the_record();
     args.permissions = permissions_;
+    args.supports_dev_channel =
+        content::PluginService::GetInstance()->PpapiDevChannelSupported();
     CommandLine* cmdline = CommandLine::ForCurrentProcess();
     DCHECK(cmdline);
     std::string flag_whitelist[] = {switches::kV, switches::kVModule};