Files.app: Enable externalfile: protocol for MTP volumes.

chrome/browser/chromeos/fileapi/external_file_url_util.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 "chrome/browser/chromeos/fileapi/external_file_url_util.h"
 
 #include <string>
+#include <vector>
 
+#include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
-#include "chrome/browser/chromeos/drive/file_system_util.h"
+#include "chrome/browser/chromeos/file_manager/app_id.h"
+#include "chrome/browser/chromeos/file_manager/fileapi_util.h"
+#include "chrome/browser/extensions/extension_util.h"
+#include "chrome/browser/profiles/profile.h"
 #include "chrome/common/url_constants.h"
+#include "content/public/browser/browser_context.h"
 #include "content/public/browser/browser_thread.h"
+#include "content/public/browser/storage_partition.h"
 #include "net/base/escape.h"
+#include "storage/browser/fileapi/file_system_url.h"
 
 using content::BrowserThread;
 
 namespace chromeos {
 
-GURL FilePathToExternalFileURL(const base::FilePath& path) {
-  std::string url(base::StringPrintf(
-      "%s:%s", chrome::kExternalFileScheme, path.AsUTF8Unsafe().c_str()));
-  return GURL(url);
+GURL FileSystemURLToExternalFileURL(
+    const storage::FileSystemURL& file_system_url) {
+  if (file_system_url.mount_type() != storage::kFileSystemTypeExternal)
+    return GURL();
+
+  switch (file_system_url.type()) {
+    case storage::kFileSystemTypeDrive:
+    case storage::kFileSystemTypeDeviceMediaAsFileStorage:
+    case storage::kFileSystemTypeProvided:
+      return GURL(base::StringPrintf(
+          "%s:%s",
+          chrome::kExternalFileScheme,
+          file_system_url.virtual_path().AsUTF8Unsafe().c_str()));
+
+    default:
+      return GURL();
+  }
 }
 
-base::FilePath ExternalFileURLToFilePath(const GURL& url) {
+base::FilePath ExternalFileURLToVirtualPath(const GURL& url) {
   if (!url.is_valid() || url.scheme() != chrome::kExternalFileScheme)
     return base::FilePath();
-  std::string path_string =
+  const std::string path_string =
       net::UnescapeURLComponent(url.GetContent(), net::UnescapeRule::NORMAL);
   return base::FilePath::FromUTF8Unsafe(path_string);
 }
 
 GURL CreateExternalFileURLFromPath(Profile* profile,
                                    const base::FilePath& path) {
-  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK_CURRENTLY_ON(BrowserThread::UI);
 
-  if (!drive::util::IsUnderDriveMountPoint(path))
+  GURL raw_file_system_url;
+  if (!file_manager::util::ConvertAbsoluteFilePathToFileSystemUrl(
+          profile,
+          path,
+          file_manager::kFileManagerAppId,
+          &raw_file_system_url)) {
+    return GURL();
+  }
+
+  const storage::FileSystemURL file_system_url =
+      file_manager::util::GetFileSystemContextForExtensionId(
+          profile, file_manager::kFileManagerAppId)
+          ->CrackURL(raw_file_system_url);
+  if (!file_system_url.is_valid())
     return GURL();
 
-  drive::FileSystemInterface* file_system =
-      drive::util::GetFileSystemByProfile(profile);
-  if (!file_system)
-    return GURL();
-
-  return FilePathToExternalFileURL(drive::util::ExtractDrivePath(path));
+  return FileSystemURLToExternalFileURL(file_system_url);
 }
 
 }  // namespace chromeos