[win8] Force browsers created with Chrome in Metro mode to be on the Ash desktop.

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

Index: chrome/browser/ui/views/frame/native_browser_frame_factory.h
diff --git a/chrome/browser/ui/views/frame/native_browser_frame_factory.h b/chrome/browser/ui/views/frame/native_browser_frame_factory.h
index 3441e08a2c024fed447f36d855fea61a13ca21c4..2c286c07314fc38809fa17a5e334118845724324 100644
--- a/chrome/browser/ui/views/frame/native_browser_frame_factory.h
+++ b/chrome/browser/ui/views/frame/native_browser_frame_factory.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_UI_VIEWS_FRAME_NATIVE_BROWSER_FRAME_FACTORY_H_
 
 #include "base/basictypes.h"
+#include "chrome/browser/ui/host_desktop.h"
 
 class BrowserFrame;
 class BrowserView;
@@ -23,6 +24,11 @@ class NativeBrowserFrameFactory {
   // factory. Use NULL to go back to default factory.
   static void Set(NativeBrowserFrameFactory* new_factory);
 
+  // Returns HOST_DESKTOP_TYPE_ASH on Windows when configured to allow browser
+  // windows only in Metro mode, otherwise |desktop_type|.
+  static chrome::HostDesktopType AdjustHostDesktopType(
+      chrome::HostDesktopType desktop_type);
+
   virtual NativeBrowserFrame* Create(BrowserFrame* browser_frame,
                                      BrowserView* browser_view);
 
@@ -30,6 +36,11 @@ class NativeBrowserFrameFactory {
   NativeBrowserFrameFactory() {}
   virtual ~NativeBrowserFrameFactory() {}
 
+ private:
+  // For Chrome running on desktop platforms, returns true if the factory should
+  // create an ash browser frame for the provided |browser_view|.
+  static bool ShouldCreateForAshDesktop(BrowserView* browser_view);
+
   DISALLOW_COPY_AND_ASSIGN(NativeBrowserFrameFactory);
 };