Add mechanism to auto mount file systems in response to a URL request.

content/browser/fileapi/browser_file_system_helper.cc

 // Copyright (c) 2012 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 "content/browser/fileapi/browser_file_system_helper.h"
 
 #include <string>
 #include <vector>
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/sequenced_task_runner.h"
 #include "base/threading/sequenced_worker_pool.h"
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
 #include "content/public/browser/content_browser_client.h"
 #include "content/public/common/content_client.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/url_constants.h"
 #include "webkit/browser/fileapi/external_mount_points.h"
 #include "webkit/browser/fileapi/file_permission_policy.h"
 #include "webkit/browser/fileapi/file_system_backend.h"
+#include "webkit/browser/fileapi/file_system_context.h"
 #include "webkit/browser/fileapi/file_system_operation_runner.h"
 #include "webkit/browser/fileapi/file_system_options.h"
 #include "webkit/browser/quota/quota_manager.h"
 
 namespace content {
 
 namespace {
 
 using fileapi::FileSystemOptions;
 
@@ skipping 25 matching lines @@
           pool->GetNamedSequenceToken("FileAPI"),
           base::SequencedWorkerPool::SKIP_ON_SHUTDOWN);
 
   // Setting up additional filesystem backends.
   ScopedVector<fileapi::FileSystemBackend> additional_backends;
   GetContentClient()->browser()->GetAdditionalFileSystemBackends(
       browser_context,
       profile_path,
       &additional_backends);
 
+  // Set up the auto mount handlers for url requests.
+  std::vector<fileapi::URLRequestAutoMountHandler>
+      url_request_auto_mount_handlers;
+  GetContentClient()->browser()->GetURLRequestAutoMountHandlers(
+      &url_request_auto_mount_handlers);
+
   scoped_refptr<fileapi::FileSystemContext> file_system_context =
       new fileapi::FileSystemContext(
           BrowserThread::GetMessageLoopProxyForThread(BrowserThread::IO).get(),
           file_task_runner.get(),
           BrowserContext::GetMountPoints(browser_context),
           browser_context->GetSpecialStoragePolicy(),
           quota_manager_proxy,
           additional_backends.Pass(),
+          url_request_auto_mount_handlers,
           profile_path,
           CreateBrowserFileSystemOptions(is_incognito));
 
   std::vector<fileapi::FileSystemType> types;
   file_system_context->GetFileSystemTypes(&types);
   for (size_t i = 0; i < types.size(); ++i) {
     ChildProcessSecurityPolicyImpl::GetInstance()->
         RegisterFileSystemPermissionPolicy(
             types[i],
             fileapi::FileSystemContext::GetPermissionPolicy(types[i]));
@@ skipping 34 matching lines @@
   context->operation_runner()->SyncGetPlatformPath(url, platform_path);
 
   // The path is to be attached to URLLoader so we grant read permission
   // for the file. (We need to check first because a parent directory may
   // already have the permissions and we don't need to grant it to the file.)
   if (!policy->CanReadFile(process_id, *platform_path))
     policy->GrantReadFile(process_id, *platform_path);
 }
 
 }  // namespace content