Factor Chrome details out of update manifest fetching.

chrome/browser/extensions/extension_service.cc

Index: chrome/browser/extensions/extension_service.cc
diff --git a/chrome/browser/extensions/extension_service.cc b/chrome/browser/extensions/extension_service.cc
index dee4596c0957a91fe46dd672bdb2ccb9b96c9ece..d7ff7ad5f26f55a4ae74507dd097b48df5743a65 100644
--- a/chrome/browser/extensions/extension_service.cc
+++ b/chrome/browser/extensions/extension_service.cc
@@ -40,6 +40,8 @@
 #include "chrome/browser/extensions/updater/extension_cache.h"
 #include "chrome/browser/extensions/updater/extension_downloader.h"
 #include "chrome/browser/extensions/updater/extension_updater.h"
+#include "chrome/browser/google/google_brand.h"
+#include "chrome/browser/metrics/chrome_metrics_service_accessor.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/signin/profile_identity_provider.h"
 #include "chrome/browser/signin/profile_oauth2_token_service_factory.h"
@@ -56,6 +58,7 @@
 #include "chrome/common/extensions/manifest_url_handler.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/url_constants.h"
+#include "components/omaha_query_params/omaha_query_params.h"
 #include "components/signin/core/browser/signin_manager.h"
 #include "components/startup_metric_utils/startup_metric_utils.h"
 #include "content/public/browser/devtools_agent_host.h"
@@ -596,7 +599,19 @@ scoped_ptr<ExtensionDownloader> ExtensionService::CreateExtensionDownloader(
       delegate,
       profile_->GetRequestContext()));
   downloader->SetWebstoreIdentityProvider(identity_provider.Pass());
-#endif
+#if defined(GOOGLE_CHROME_BUILD)
+  std::string brand;
+  google_brand::GetBrand(&brand);
+  if (!brand.empty() && !google_brand::IsOrganic(brand))

[not at google - send to devlin, 2014/08/13 01:30:02]

I read this as IsOrganic(bread). Yum.

+    downloader->SetBrandCode(brand);
+#endif  // defined(GOOGLE_CHROME_BUILD)
+  downloader->SetManifestQueryParams(
+      omaha_query_params::OmahaQueryParams::Get(
+          omaha_query_params::OmahaQueryParams::CRX));
+  downloader->EnablePingDataForDomain("google.com");
+  downloader->EnableExtraUpdateMetrics(
+      ChromeMetricsServiceAccessor::IsMetricsReportingEnabled());
+#endif  // defined(ENABLE_EXTENSIONS)
   return downloader.Pass();
 }