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

extensions/shell/common/shell_extensions_client.cc

Index: extensions/shell/common/shell_extensions_client.cc
diff --git a/extensions/shell/common/shell_extensions_client.cc b/extensions/shell/common/shell_extensions_client.cc
index a26c95c2142ea9c8eab92f6bc257450614c8502d..d4a8be3181b7ca032e6b9b65d6b1c157937da9ae 100644
--- a/extensions/shell/common/shell_extensions_client.cc
+++ b/extensions/shell/common/shell_extensions_client.cc
@@ -197,7 +197,7 @@ bool ShellExtensionsClient::IsScriptableURL(const GURL& url,
 
 bool ShellExtensionsClient::IsAPISchemaGenerated(
     const std::string& name) const {
-  return core_api::GeneratedSchemas::IsGenerated(name) ||
+  return api::GeneratedSchemas::IsGenerated(name) ||
          shell::api::GeneratedSchemas::IsGenerated(name);
 }
 
@@ -208,7 +208,7 @@ base::StringPiece ShellExtensionsClient::GetAPISchema(
     return shell::api::GeneratedSchemas::Get(name);
 
   // Core extensions APIs.
-  return core_api::GeneratedSchemas::Get(name);
+  return api::GeneratedSchemas::Get(name);
 }
 
 void ShellExtensionsClient::RegisterAPISchemaResources(