Only build various flash/pnacl/ppapi code when they are enabled.

chrome/browser/browser_process_impl.cc

Index: chrome/browser/browser_process_impl.cc
diff --git a/chrome/browser/browser_process_impl.cc b/chrome/browser/browser_process_impl.cc
index c379704ad6f35baba5ba9319cc9a0d1650a7700b..b1787211ef495be9e5e441b365b9501754c303da 100644
--- a/chrome/browser/browser_process_impl.cc
+++ b/chrome/browser/browser_process_impl.cc
@@ -29,7 +29,6 @@
 #include "chrome/browser/chrome_content_browser_client.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/component_updater/chrome_component_updater_configurator.h"
-#include "chrome/browser/component_updater/pnacl/pnacl_component_installer.h"
 #include "chrome/browser/defaults.h"
 #include "chrome/browser/devtools/remote_debugging_server.h"
 #include "chrome/browser/download/download_request_limiter.h"
@@ -129,6 +128,10 @@
 #include "components/storage_monitor/storage_monitor.h"
 #endif
 
+#if !defined(DISABLE_NACL)
+#include "chrome/browser/component_updater/pnacl/pnacl_component_installer.h"
+#endif
+
 #if defined(ENABLE_PLUGIN_INSTALLATION)
 #include "chrome/browser/plugins/plugins_resource_service.h"
 #endif
@@ -901,11 +904,15 @@ CRLSetFetcher* BrowserProcessImpl::crl_set_fetcher() {
 
 component_updater::PnaclComponentInstaller*
 BrowserProcessImpl::pnacl_component_installer() {
+#if !defined(DISABLE_NACL)
   if (!pnacl_component_installer_.get()) {
     pnacl_component_installer_.reset(
         new component_updater::PnaclComponentInstaller());
   }
   return pnacl_component_installer_.get();
+#else
+  return NULL;
+#endif
 }
 
 void BrowserProcessImpl::ResourceDispatcherHostCreated() {