Deprecate FileSystemMountPointProvider::GetFileSystemRootPathOnFileThread

This was initially introduced to get ExternalFileSystem's
local mount root path, but accessing MountPointProvider
from lower-layer FileUtil module looks ugly.

This patch:
- Deprecate FileSystemMountPointProvider::GetFileSystemRootPathOnFileThread
- Add FileSystemOperationContext::root_path() instead for passing root path

BUG=241701
TEST=Moved tests from content_unittests:FileSystemMountPointProviderTest.*
 to content_unittests:SandboxMountPointProviderTest.*

R=bauerb@chromium.org, michaeln@chromium.org, tzik@chromium.org

Review URL: https://codereview.chromium.org/15959006

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@202776 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 1 insertions, 0 deletions

diff --git a/webkit/browser/fileapi/local_file_util_unittest.cc b/webkit/browser/fileapi/local_file_util_unittest.cc
index d1920ee..cac0d4c 100644
--- a/webkit/browser/fileapi/local_file_util_unittest.cc
+++ b/webkit/browser/fileapi/local_file_util_unittest.cc
@@ -52,6 +52,7 @@ class LocalFileUtilTest : public testing::Test {
       new FileSystemOperationContext(file_system_context_);
     context->set_update_observers(
         *file_system_context_->GetUpdateObservers(kFileSystemType));
+    context->set_root_path(data_dir_.path());
     return context;
   }