Keep NaCl plugins used in app background pages alive when active.

chrome/browser/nacl_host/nacl_browser_delegate_impl.h

Index: chrome/browser/nacl_host/nacl_browser_delegate_impl.h
diff --git a/chrome/browser/nacl_host/nacl_browser_delegate_impl.h b/chrome/browser/nacl_host/nacl_browser_delegate_impl.h
index b93b7590cde4b9e6ec0d4110ff02be4ece28a78d..9192065a13d425e44022858afbd5aed945b66dfd 100644
--- a/chrome/browser/nacl_host/nacl_browser_delegate_impl.h
+++ b/chrome/browser/nacl_host/nacl_browser_delegate_impl.h
@@ -6,7 +6,7 @@
 #define CHROME_BROWSER_NACL_HOST_NACL_BROWSER_DELEGATE_IMPL_H_
 
 #include "base/compiler_specific.h"
-#include "components/nacl/common/nacl_browser_delegate.h"
+#include "components/nacl/browser/nacl_browser_delegate.h"
 #include "extensions/browser/info_map.h"
 
 class NaClBrowserDelegateImpl : public NaClBrowserDelegate {
@@ -29,6 +29,8 @@ class NaClBrowserDelegateImpl : public NaClBrowserDelegate {
                                      base::FilePath* file_path) OVERRIDE;
   virtual void SetDebugPatterns(std::string debug_patterns) OVERRIDE;
   virtual bool URLMatchesDebugPatterns(const GURL& manifest_url) OVERRIDE;
+  virtual const content::BrowserPpapiHost::OnIdleChangeCallback

[yzshen1, 2013/11/21 18:01:50]

why do we need 'const' here?

[scheib, 2013/12/11 21:35:40]

Done. We don't.

+      GetOnIdleChangeCallback() OVERRIDE;
 
  private:
   scoped_refptr<extensions::InfoMap> extension_info_map_;