Land http://codereview.chromium.org/159067:

chrome/browser/extensions/extension_process_manager.cc

Index: chrome/browser/extensions/extension_process_manager.cc
diff --git a/chrome/browser/extensions/extension_process_manager.cc b/chrome/browser/extensions/extension_process_manager.cc
index 0a362a487c533e85682adac12771478eb5bd808e..acf43af477f661bc67a26c6ca3ec853cbb3f32dd 100644
--- a/chrome/browser/extensions/extension_process_manager.cc
+++ b/chrome/browser/extensions/extension_process_manager.cc
@@ -56,7 +56,8 @@ ExtensionHost* ExtensionProcessManager::CreateView(Extension* extension,
   DCHECK(extension);
   DCHECK(browser);
   ExtensionHost* host =
-      new ExtensionHost(extension, GetSiteInstanceForURL(url), url);
+      new ExtensionHost(extension, GetSiteInstanceForURL(url), url,
+                        ViewType::EXTENSION_TOOLSTRIP);
   host->CreateView(browser);
   OnExtensionHostCreated(host, false);
   return host;
@@ -78,7 +79,8 @@ ExtensionHost* ExtensionProcessManager::CreateView(const GURL& url,
 ExtensionHost* ExtensionProcessManager::CreateBackgroundHost(
     Extension* extension, const GURL& url) {
   ExtensionHost* host =
-      new ExtensionHost(extension, GetSiteInstanceForURL(url), url);
+      new ExtensionHost(extension, GetSiteInstanceForURL(url), url,
+                        ViewType::EXTENSION_BACKGROUND_PAGE);
   host->CreateRenderView(NULL);  // create a RenderViewHost with no view
   OnExtensionHostCreated(host, true);
   return host;