Generate all extension schema namespaces as "api" and instead vary the generated bundle names.

extensions/browser/api/system_info/system_info_api.cc

Index: extensions/browser/api/system_info/system_info_api.cc
diff --git a/extensions/browser/api/system_info/system_info_api.cc b/extensions/browser/api/system_info/system_info_api.cc
index a5b85bf801d2c7e752b0089272bfac88c8ba9d82..8786ed53a17441e2464de039ae0f3045cf10df04 100644
--- a/extensions/browser/api/system_info/system_info_api.cc
+++ b/extensions/browser/api/system_info/system_info_api.cc
@@ -26,12 +26,12 @@
 
 namespace extensions {
 
-using core_api::system_storage::StorageUnitInfo;
+using api::system_storage::StorageUnitInfo;
 using content::BrowserThread;
 using storage_monitor::StorageMonitor;
 
-namespace system_display = core_api::system_display;
-namespace system_storage = core_api::system_storage;
+namespace system_display = api::system_display;
+namespace system_storage = api::system_storage;
 
 namespace {