Linux Aura: Use Aura theme on all windows when 'Use Classic theme' is used

chrome/browser/profiles/profile.h

Index: chrome/browser/profiles/profile.h
diff --git a/chrome/browser/profiles/profile.h b/chrome/browser/profiles/profile.h
index 8c0106d22c58cb961a929607898d06aa722c1af5..bcfe5753bb2f34ea23dc37a23b5eed7e9eec05ac 100644
--- a/chrome/browser/profiles/profile.h
+++ b/chrome/browser/profiles/profile.h
@@ -100,6 +100,10 @@ class Profile : public content::BrowserContext {
 
   // Key used to bind profile to the widget with which it is associated.
   static const char kProfileKey[];
+  // Key used to bind an original (non-incognito) profile to the
+  // widget with which it is associated.  Only used on Linux for
+  // determining if windows should use the system theme.
+  static const char kThemeProfileKey[];
   // Value representing no hosted domain in the kProfileHostedDomain preference.
   static const char kNoHostedDomainFound[];