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

extensions/browser/api/cast_channel/cast_auth_ica_unittest.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "extensions/browser/api/cast_channel/cast_auth_ica.h"
 
 #include <string>
 
 #include "base/base64.h"
 #include "testing/gtest/include/gtest/gtest.h"
 
 namespace extensions {
 
-namespace core_api {
+namespace api {
 
 namespace cast_channel {
 
 namespace {
 
 static const net::SHA256HashValue kFingerprintValid1 = {{
     0x52, 0x9D, 0x9C, 0xD6, 0x7F, 0xE5, 0xEB, 0x69, 0x8E, 0x70, 0xDD, 0x26,
     0xD7, 0xD8, 0xF1, 0x26, 0x59, 0xF1, 0xE6, 0xE5, 0x23, 0x48, 0xBF, 0x6A,
     0x5C, 0xF7, 0x16, 0xE1, 0x3F, 0x41, 0x0E, 0x73
 }};
@@ skipping 114 matching lines @@
       "LR6SyAwpjdrL+vlHMk3Gol6KQ98YpF0ghHnN3/FFW4ibvIwjmRbp+tUV3h8TRcCOjlXVGp"
       "bzPtNRRlTqfv7Rxm5YXkZMLmJJMZiTs5+o8FMRMTQZT4hRR3DQ+A/jofViyTGA==";
   EXPECT_TRUE(SetTrustedCertificateAuthorities(keys, signature));
 
   base::StringPiece result = GetDefaultTrustedICAPublicKey();
   EXPECT_FALSE(result.empty());
 }
 
 }  // namespace cast_channel
 
-}  // namespace core_api
+}  // namespace api
 
 }  // namespace extensions