Move Sad Tab implementation out of the TabContentsViews.

chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.h

Index: chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.h
diff --git a/chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.h b/chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.h
index 48a97f689eb495f1c345b3e1b4b1efcc76f3748b..4aa0d32cd0f07e75a1b456942a725ee8479335ad 100644
--- a/chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.h
+++ b/chrome/browser/ui/cocoa/tab_contents/sad_tab_controller.h
@@ -6,19 +6,24 @@
 #define CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_SAD_TAB_CONTROLLER_H_
 #pragma once
 
+#include "ui/gfx/native_widget_types.h"
+
+#if defined(__OBJC__)
 #import <Cocoa/Cocoa.h>
+#endif  // __OBJC__
 
 class TabContents;
 
+#if defined(__OBJC__)
+
 // A controller class that manages the SadTabView (aka "Aw Snap" or crash page).
 @interface SadTabController : NSViewController {
  @private
   TabContents* tabContents_;  // Weak reference.
 }
 
-// Designated initializer is initWithTabContents.
-- (id)initWithTabContents:(TabContents*)someTabContents
-                superview:(NSView*)superview;
+// Designated initializer.
+- (id)initWithTabContents:(TabContents*)tabContents;
 
 // This action just calls the NSApp sendAction to get it into the standard
 // Cocoa action processing.
@@ -30,4 +35,16 @@ class TabContents;
 
 @end
 
+#else
+
+class SadTabController;
+
+#endif  // __OBJC__
+
+// Functions that may be accessed from non-Objective-C C/C++ code.
+namespace sad_tab_controller_mac {
+SadTabController* CreateSadTabController(TabContents* tab_contents);
+gfx::NativeView GetViewOfSadTabController(SadTabController* sad_tab);
+}
+
 #endif  // CHROME_BROWSER_UI_COCOA_TAB_CONTENTS_SAD_TAB_CONTROLLER_H_