Enable immersive fullscreen on Windows Ash.

chrome/browser/ui/views/frame/browser_view.h

Index: chrome/browser/ui/views/frame/browser_view.h
diff --git a/chrome/browser/ui/views/frame/browser_view.h b/chrome/browser/ui/views/frame/browser_view.h
index 6778b8834d360d4585f218254c7b9b27c4773368..bc4406125def567b073f9edc7fc384d7d3719869 100644
--- a/chrome/browser/ui/views/frame/browser_view.h
+++ b/chrome/browser/ui/views/frame/browser_view.h
@@ -123,6 +123,7 @@ class BrowserView : public BrowserWindow,
 
   // Returns a Browser instance of this view.
   Browser* browser() { return browser_.get(); }
+  const Browser* browser() const { return browser_.get(); }
 
   // Initializes (or re-initializes) the status bubble.  We try to only create
   // the bubble once and re-use it for the life of the browser, but certain
@@ -478,9 +479,9 @@ class BrowserView : public BrowserWindow,
   FRIEND_TEST_ALL_PREFIXES(BrowserViewsAccessibilityTest,
                            TestAboutChromeViewAccObj);
 
-  enum FullscreenType {
-    FOR_DESKTOP,
-    FOR_METRO
+  enum FullscreenMode {
+    NORMAL_FULLSCREEN,
+    METRO_SNAP_FULLSCREEN
   };
 
   // Appends to |toolbars| a pointer to each AccessiblePaneView that
@@ -545,7 +546,7 @@ class BrowserView : public BrowserWindow,
   // |bubble_type| determines what should be shown in the fullscreen exit
   // bubble.
   void ProcessFullscreen(bool fullscreen,
-                         FullscreenType fullscreen_type,
+                         FullscreenMode mode,
                          const GURL& url,
                          FullscreenExitBubbleType bubble_type);