Constrained window sheet controller (test patch)

chrome/browser/ui/cocoa/tabs/tab_window_controller.mm

Index: chrome/browser/ui/cocoa/tabs/tab_window_controller.mm
diff --git a/chrome/browser/ui/cocoa/tabs/tab_window_controller.mm b/chrome/browser/ui/cocoa/tabs/tab_window_controller.mm
index a4fb6f612c4f74e29061a9929b4c9e84804df483..6665b6cb1e85a3fa10c95387681b28a29e3af5b7 100644
--- a/chrome/browser/ui/cocoa/tabs/tab_window_controller.mm
+++ b/chrome/browser/ui/cocoa/tabs/tab_window_controller.mm
@@ -42,13 +42,6 @@
 @implementation TabWindowController
 @synthesize tabContentArea = tabContentArea_;
 
-- (id)initWithWindow:(NSWindow*)window {
-  if ((self = [super initWithWindow:window]) != nil) {
-    lockedTabs_.reset([[NSMutableSet alloc] initWithCapacity:10]);
-  }
-  return self;
-}
-
 // Add the top tab strop to the window, above the content box and add it to the
 // view hierarchy as a sibling of the content view so it can overlap with the
 // window frame.
@@ -270,14 +263,9 @@
 }
 
 - (BOOL)isTabDraggable:(NSView*)tabView {
-  return ![lockedTabs_ containsObject:tabView];
-}
-
-- (void)setTab:(NSView*)tabView isDraggable:(BOOL)draggable {
-  if (draggable)
-    [lockedTabs_ removeObject:tabView];
-  else
-    [lockedTabs_ addObject:tabView];
+  // Subclasses should implement this.
+  NOTIMPLEMENTED();
+  return YES;
 }
 
 // Tell the window that it needs to call performClose: as soon as the current