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

extensions/browser/api/document_scan/document_scan_interface_chromeos_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/document_scan/document_scan_interface_chromeos.h"
 
 #include <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "chromeos/dbus/mock_lorgnette_manager_client.h"
 #include "testing/gtest/include/gtest/gtest.h"
 #include "third_party/cros_system_api/dbus/service_constants.h"
 
 using testing::_;
 
 namespace extensions {
 
-namespace core_api {
+namespace api {
 
 // Tests of networking_private_crypto support for Networking Private API.
 class DocumentScanInterfaceChromeosTest : public testing::Test {
  public:
   DocumentScanInterfaceChromeosTest()
       : client_(new chromeos::MockLorgnetteManagerClient()) {}
   ~DocumentScanInterfaceChromeosTest() override {}
 
   void SetUp() override {
     scan_interface_.lorgnette_manager_client_ = client_.get();
@@ skipping 85 matching lines @@
   const char kExpectedImageData[] =
       "data:image/png;base64,UHJldHR5UGljdHVyZQ==";
 
   EXPECT_CALL(*this, OnScanCompleted(kExpectedImageData, "image/png", ""));
   scan_interface_.Scan(
       kScannerName, DocumentScanInterface::kScanModeColor, kResolution,
       base::Bind(&DocumentScanInterfaceChromeosTest::OnScanCompleted,
                  base::Unretained(this)));
 }
 
-}  // namespace core_api
+}  // namespace api
 
 }  // namespace extensions