[ios] Refactored dialogs suppression.

ios/web/web_state/ui/crw_web_controller.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef IOS_WEB_WEB_STATE_UI_CRW_WEB_CONTROLLER_H_
 #define IOS_WEB_WEB_STATE_UI_CRW_WEB_CONTROLLER_H_
 
 #import <UIKit/UIKit.h>
 
 #include "base/memory/scoped_ptr.h"
@@ skipping 103 matching lines @@
 
 // Returns the x, y offset the content has been scrolled.
 @property(nonatomic, readonly) CGPoint scrollPosition;
 
 // Returns whether the top of the content is visible.
 @property(nonatomic, readonly) BOOL atTop;
 
 // Whether or not content can programmatically display the keyboard.
 @property(nonatomic, assign) BOOL keyboardDisplayRequiresUserAction;
 
+// YES if JavaScript dialogs, HTTP authentication dialogs and window.open
+// calls should be suppressed. Default is NO. When dialog is suppressed
+// |CRWWebDelegate webControllerDidSuppressDialog:| will be called.
+@property(nonatomic, assign) BOOL suppressDialogs;
+
 // Return an image to use as replacement of a missing snapshot.
 + (UIImage*)defaultSnapshotImage;
 
 // Replaces the currently displayed content with |contentView|.  The content
 // view will be dismissed for the next navigation.
 - (void)showTransientContentView:(CRWContentView*)contentView;
 
 // Clear the transient content view, if one is shown.
 - (void)clearTransientContentView;
 
@@ skipping 99 matching lines @@
 
 // Sets the closed property to true for the child window with the given name.
 - (void)childWindowClosed:(NSString*)windowName;
 
 // Show overlay, don't reload web page. Used when the view will be
 // visible only briefly (e.g., tablet side swipe).
 - (void)setOverlayPreviewMode:(BOOL)overlayPreviewMode;
 
 // Sets policy for web page dialog handling. Controls dialog suppression and
 // notifying the WebDelegate.
+// TODO(crbug.com/595463): remove this method, once embedder uses
+// |setSuppressDialogs|.
 - (void)setPageDialogOpenPolicy:(web::PageDialogOpenPolicy)policy;
 
 // Records the state (scroll position, form values, whatever can be harvested)
 // from the current page into the current session entry.
 - (void)recordStateInHistory;
 // Restores the state for this page from session history.
 // TODO(stuartmorgan): This is public only temporarily; once refactoring is
 // complete it will be handled internally.
 - (void)restoreStateFromHistory;
 
@@ skipping 73 matching lines @@
 // Returns the header height.
 - (CGFloat)headerHeight;
 
 // Caches request POST data in the given session entry.  Exposed for testing.
 - (void)cachePOSTDataForRequest:(NSURLRequest*)request
                  inSessionEntry:(CRWSessionEntry*)currentSessionEntry;
 
 @end
 
 #endif  // IOS_WEB_WEB_STATE_UI_CRW_WEB_CONTROLLER_H_