Removing unused function.

This function is never called. If there is ever a need to do this,
chome_paths has a generalized mechanism for overriding file paths.

Change-Id: I0822b22aed510492f88ecc0b4595649aee749583
Reviewed-on: https://chromium-review.googlesource.com/1102466Reviewed-by: Lei Zhang <thestig@chromium.org>
Commit-Queue: Denis Yaroshevskiy <dyaroshev@yandex-team.ru>
Cr-Commit-Position: refs/heads/master@{#568773}

chrome/common/chrome_paths_internal.h

@@ -69,13 +69,6 @@ bool GetUserVideosDirectory(base::FilePath* result);
 // in the .app at Contents/Versions/w.x.y.z.
 base::FilePath GetVersionedDirectory();
 
-// This overrides the directory returned by |GetVersionedDirectory()|, to be
-// used when |GetVersionedDirectory()| can't automatically determine the proper
-// location. This is the case when the browser didn't load itself but by, e.g.,
-// the app mode loader. This should be called before |ChromeMain()|. This takes
-// ownership of the object |path| and the caller must not delete it.
-void SetOverrideVersionedDirectory(const base::FilePath* path);
-
 // Most of the application is further contained within the framework.  The
 // framework bundle is located within the versioned directory at a specific
 // path.  The only components in the versioned directory not included in the

chrome/common/chrome_paths_mac.mm

@@ -20,8 +20,6 @@
 
 namespace {
 
-const base::FilePath* g_override_versioned_directory = NULL;
-
 // Return a retained (NOT autoreleased) NSBundle* as the internal
 // implementation of chrome::OuterAppBundle(), which should be the only
 // caller.
@@ -152,9 +150,6 @@ bool GetUserVideosDirectory(base::FilePath* result) {
 }
 
 base::FilePath GetVersionedDirectory() {
-  if (g_override_versioned_directory)
-    return *g_override_versioned_directory;
-
   // Start out with the path to the running executable.
   base::FilePath path;
   base::PathService::Get(base::FILE_EXE, &path);
@@ -177,13 +172,6 @@ base::FilePath GetVersionedDirectory() {
   return path;
 }
 
-void SetOverrideVersionedDirectory(const base::FilePath* path) {
-  if (path != g_override_versioned_directory) {
-    delete g_override_versioned_directory;
-    g_override_versioned_directory = path;
-  }
-}
-
 base::FilePath GetFrameworkBundlePath() {
   // It's tempting to use +[NSBundle bundleWithIdentifier:], but it's really
   // slow (about 30ms on 10.5 and 10.6), despite Apple's documentation stating