[Sync] Fix namespaces for the sync_sessions component.

chrome/browser/ui/sync/browser_synced_window_delegates_getter.h

 // Copyright 2015 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.
 
 #ifndef CHROME_BROWSER_UI_SYNC_BROWSER_SYNCED_WINDOW_DELEGATES_GETTER_H_
 #define CHROME_BROWSER_UI_SYNC_BROWSER_SYNCED_WINDOW_DELEGATES_GETTER_H_
 
 #include <set>
 
 #include "base/macros.h"
 #include "components/sessions/core/session_id.h"
 #include "components/sync_sessions/synced_window_delegates_getter.h"
 
 class Profile;
 

[skym, 2016/09/14 22:29:58]

Okay, I think we need to decide, does chrome/browser/ui/sync/* get the
browser_sync namespace? Or not? Every file in here should be consistent, imo.

[maxbogue, 2016/09/15 00:43:54]

I really don't know why half that stuff doesn't even have a namespace. I'd
rather not change it for now though.

 namespace browser_sync {
 
-class SyncedWindowDelegate;
-
 // This class defines how to access SyncedWindowDelegates on desktop.
-class BrowserSyncedWindowDelegatesGetter : public SyncedWindowDelegatesGetter {
+class BrowserSyncedWindowDelegatesGetter
+    : public sync_sessions::SyncedWindowDelegatesGetter {
  public:
   explicit BrowserSyncedWindowDelegatesGetter(Profile* profile);
   ~BrowserSyncedWindowDelegatesGetter() override;
 
   // SyncedWindowDelegatesGetter implementation
-  std::set<const SyncedWindowDelegate*> GetSyncedWindowDelegates() override;
-  const SyncedWindowDelegate* FindById(SessionID::id_type id) override;
+  std::set<const sync_sessions::SyncedWindowDelegate*>
+  GetSyncedWindowDelegates() override;
+  const sync_sessions::SyncedWindowDelegate* FindById(
+      SessionID::id_type id) override;
 
  private:
   Profile* const profile_;
 
   DISALLOW_COPY_AND_ASSIGN(BrowserSyncedWindowDelegatesGetter);
 };
 
 }  // namespace browser_sync
 
 #endif  // CHROME_BROWSER_UI_SYNC_BROWSER_SYNCED_WINDOW_DELEGATES_GETTER_H_