Apps V2 in Pepper: introduce singleton resource ExtensionsCommon.

chrome/renderer/pepper/chrome_renderer_pepper_host_factory.cc

Index: chrome/renderer/pepper/chrome_renderer_pepper_host_factory.cc
diff --git a/chrome/renderer/pepper/chrome_renderer_pepper_host_factory.cc b/chrome/renderer/pepper/chrome_renderer_pepper_host_factory.cc
index f243c3f815493fac6f253c284e79bfcf57aa61c8..f05eaf80941eeaacd6f9520a7416124e0c135579 100644
--- a/chrome/renderer/pepper/chrome_renderer_pepper_host_factory.cc
+++ b/chrome/renderer/pepper/chrome_renderer_pepper_host_factory.cc
@@ -5,6 +5,7 @@
 #include "chrome/renderer/pepper/chrome_renderer_pepper_host_factory.h"
 
 #include "base/logging.h"
+#include "chrome/renderer/pepper/pepper_extensions_common_host.h"
 #include "chrome/renderer/pepper/pepper_flash_font_file_host.h"
 #include "chrome/renderer/pepper/pepper_flash_fullscreen_host.h"
 #include "chrome/renderer/pepper/pepper_flash_menu_host.h"
@@ -40,6 +41,17 @@ ChromeRendererPepperHostFactory::CreateResourceHost(
   if (!host_->IsValidInstance(instance))
     return scoped_ptr<ResourceHost>();
 
+  // Dev interfaces.
+  if (host_->GetPpapiHost()->permissions().HasPermission(
+      ppapi::PERMISSION_DEV)) {
+    switch (message.type()) {
+      case PpapiHostMsg_ExtensionsCommon_Create::ID: {
+        return scoped_ptr<ResourceHost>(PepperExtensionsCommonHost::Create(
+            host_, instance, params.pp_resource()));
+      }
+    }
+  }
+
   if (host_->GetPpapiHost()->permissions().HasPermission(
       ppapi::PERMISSION_FLASH)) {
     switch (message.type()) {