Files.app: Fix DCHECK in FakeFileSystem.

chrome/browser/chromeos/drive/fake_file_system.cc

Index: chrome/browser/chromeos/drive/fake_file_system.cc
diff --git a/chrome/browser/chromeos/drive/fake_file_system.cc b/chrome/browser/chromeos/drive/fake_file_system.cc
index c53f260c4ebc8e6cec75780beb859ca7aed8d9e7..41c84a31c865f10759b25d0dd319e869c273b5c3 100644
--- a/chrome/browser/chromeos/drive/fake_file_system.cc
+++ b/chrome/browser/chromeos/drive/fake_file_system.cc
@@ -145,10 +145,9 @@ void FakeFileSystem::GetResourceEntry(
     const base::FilePath& file_path,
     const GetResourceEntryCallback& callback) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
+  DCHECK(file_path.BaseName() != file_path);

[kinaba, 2014/09/19 01:47:18]

The condition looks a bit detouring.

What we want to enforce here is that all paths must be under "My Drive",
according to the comment below. Then, what about asserting in that way? For
instance, like putting

DCHECK(util::GetDriveMyDriveRootPath().IsParent(file_path));

after the if branch (an before the GetResourceEntry(file_path.DirName()) call).

[hirono, 2014/09/22 04:53:28]

Let me do this. Thank you!

 
   // Now, we only support files under my drive.
-  DCHECK(!util::IsUnderDriveMountPoint(file_path));
-
   if (file_path == util::GetDriveMyDriveRootPath()) {
     // Specialized for the root entry.
     drive_service_->GetAboutResource(