Constrained window sheet controller (test patch)

chrome/browser/ui/cocoa/constrained_window_mac.h

Index: chrome/browser/ui/cocoa/constrained_window_mac.h
diff --git a/chrome/browser/ui/cocoa/constrained_window_mac.h b/chrome/browser/ui/cocoa/constrained_window_mac.h
index c2b37967940afcdc837eed1fe2f3478bf1c19513..069b7a018ecf3e6b05daacdb2314791f11470411 100644
--- a/chrome/browser/ui/cocoa/constrained_window_mac.h
+++ b/chrome/browser/ui/cocoa/constrained_window_mac.h
@@ -22,15 +22,7 @@ class TabContents;
 // implement this protocol.
 @protocol ConstrainedWindowSupport
 
-// Requests that |window| is opened as a per-tab sheet to the current tab.
-- (void)attachConstrainedWindow:(ConstrainedWindowMac*)window;
-
-// Closes the tab sheet |window| and potentially shows the next sheet in the
-// tab's sheet queue.
-- (void)removeConstrainedWindow:(ConstrainedWindowMac*)window;
-
-// Returns NO if constrained windows cannot be attached to this window.
-- (BOOL)canAttachConstrainedWindow;
+- (GTMWindowSheetController*)sheetController;
 
 @end
 
@@ -145,6 +137,8 @@ class ConstrainedWindowMac : public ConstrainedWindow {
  private:
   friend class ConstrainedWindow;
 
+  bool GetCanShow() const;
+
   // The TabContents that owns and constrains this ConstrainedWindow.
   TabContents* tab_contents_;