Move Sad Tab implementation out of the TabContentsViews.

chrome/browser/ui/cocoa/tab_contents/sad_tab_controller_unittest.mm

Index: chrome/browser/ui/cocoa/tab_contents/sad_tab_controller_unittest.mm
diff --git a/chrome/browser/ui/cocoa/tab_contents/sad_tab_controller_unittest.mm b/chrome/browser/ui/cocoa/tab_contents/sad_tab_controller_unittest.mm
index 0ddf62f97efb07933de304d9d34ac17820d3fa16..2694d1d37a4e02fb78c84963b14b16e8be0953fc 100644
--- a/chrome/browser/ui/cocoa/tab_contents/sad_tab_controller_unittest.mm
+++ b/chrome/browser/ui/cocoa/tab_contents/sad_tab_controller_unittest.mm
@@ -52,13 +52,13 @@ class SadTabControllerTest : public ChromeRenderViewHostTestHarness {
 
   // Creates the controller and adds its view to contents, caller has ownership.
   SadTabController* CreateController() {
-    NSView* contentView = [test_window_ contentView];
     SadTabController* controller =
-        [[SadTabController alloc] initWithTabContents:contents()
-                                            superview:contentView];
+        [[SadTabController alloc] initWithTabContents:contents()];
     EXPECT_TRUE(controller);
     NSView* view = [controller view];
     EXPECT_TRUE(view);
+    NSView* contentView = [test_window_ contentView];
+    [contentView addSubview:view];
 
     return controller;
   }