Move c/b/extension/api/* into extensions namespace

chrome/browser/extensions/api/webview/webview_api.cc

 // Copyright (c) 2013 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 "chrome/browser/extensions/api/webview/webview_api.h"
 
 #include "chrome/browser/extensions/api/browsing_data/browsing_data_api.h"
 #include "chrome/browser/extensions/tab_helper.h"
 #include "chrome/browser/guestview/webview/webview_guest.h"
 #include "chrome/common/extensions/api/webview.h"
 #include "content/public/browser/render_process_host.h"
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/storage_partition.h"
 #include "content/public/browser/user_metrics.h"
 #include "content/public/browser/web_contents.h"
 #include "extensions/common/error_utils.h"
 
 using extensions::api::tabs::InjectDetails;
 namespace webview = extensions::api::webview;
 
+namespace extensions {
+
 namespace {
 int MaskForKey(const char* key) {
   if (strcmp(key, extension_browsing_data_api_constants::kAppCacheKey) == 0)
     return content::StoragePartition::REMOVE_DATA_MASK_APPCACHE;
   if (strcmp(key, extension_browsing_data_api_constants::kCookiesKey) == 0)
     return content::StoragePartition::REMOVE_DATA_MASK_COOKIES;
   if (strcmp(key, extension_browsing_data_api_constants::kFileSystemsKey) == 0)
     return content::StoragePartition::REMOVE_DATA_MASK_FILE_SYSTEMS;
   if (strcmp(key, extension_browsing_data_api_constants::kIndexedDBKey) == 0)
     return content::StoragePartition::REMOVE_DATA_MASK_INDEXEDDB;
@@ skipping 270 matching lines @@
   EXTENSION_FUNCTION_VALIDATE(params.get());
 
   WebViewGuest* guest = WebViewGuest::From(
       render_view_host()->GetProcess()->GetID(), params->instance_id);
   if (!guest)
     return false;
 
   guest->Terminate();
   return true;
 }
+
+}  // namespace extensions