[MediaGalleries] Mock the app data dir on Windows/Mac

chrome/browser/media_galleries/media_galleries_test_util.h

Index: chrome/browser/media_galleries/media_galleries_test_util.h
diff --git a/chrome/browser/media_galleries/media_galleries_test_util.h b/chrome/browser/media_galleries/media_galleries_test_util.h
index 3a7864339506caced413426650e81bdd6910334e..2fc88453547e26e30d9044189fc41e45d33c681a 100644
--- a/chrome/browser/media_galleries/media_galleries_test_util.h
+++ b/chrome/browser/media_galleries/media_galleries_test_util.h
@@ -8,6 +8,8 @@
 #include "base/basictypes.h"
 #include "base/files/scoped_temp_dir.h"
 #include "base/memory/ref_counted.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/test/scoped_path_override.h"
 
 namespace extensions {
 class Extension;
@@ -29,12 +31,15 @@ class EnsureMediaDirectoriesExists {
   int num_galleries() const { return num_galleries_; }
 
  private:
-  void Init();
-
   base::ScopedTempDir fake_dir_;
 
   int num_galleries_;
 
+  scoped_ptr<base::ScopedPathOverride> appdir_override_;

[Lei Zhang, 2013/06/19 21:06:50]

You may want to mention why we are doing this. Otherwise someone is going to
read this and raise an eyebrow.

[Greg Billock, 2013/06/20 05:24:52]

There's an explanation in the cc file.

+  scoped_ptr<base::ScopedPathOverride> music_override_;
+  scoped_ptr<base::ScopedPathOverride> pictures_override_;
+  scoped_ptr<base::ScopedPathOverride> video_override_;
+
   DISALLOW_COPY_AND_ASSIGN(EnsureMediaDirectoriesExists);
 };