Updated TODO(shreyasv)

ios/chrome/browser/snapshots/snapshot_manager.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_CHROME_BROWSER_SNAPSHOTS_SNAPSHOT_MANAGER_H_
 #define IOS_CHROME_BROWSER_SNAPSHOTS_SNAPSHOT_MANAGER_H_
 
 #import <UIKit/UIKit.h>
 
 #include "ios/web/public/web_view_type.h"
@@ skipping 10 matching lines @@
 
 // Takes a snapshot for the supplied view (which should correspond to the given
 // type of web view). Returns an autoreleased image cropped and scaled
 // appropriately.
 // The image is not yet cached.
 // The image can also contain overlays (if |overlays| is not nil and not empty).
 - (UIImage*)generateSnapshotForView:(UIView*)view
                            withRect:(CGRect)rect
                            overlays:(NSArray*)overlays;
 
-// TODO(shreyasv): Consider passing the sessionID into SnapshotManager from Tab
-// in the init method and simplifying the following methods.
 // Retrieve a cached snapshot for the |sessionID| and return it via the callback
 // if it exists. The callback is garanteed to be called synchronously if the
 // image is in memory. It will be called asynchronously if the image is on disk
 // or with nil if the image is not present at all.
 - (void)retrieveImageForSessionID:(NSString*)sessionID
                          callback:(void (^)(UIImage*))callback;
 
 // Request the session's grey snapshot. If the image is already loaded in
 // memory, this will immediately call back on |callback|.  Otherwise, the grey
 // image will be loaded off disk or created by converting an existing color
 // snapshot to grey.
 - (void)retrieveGreyImageForSessionID:(NSString*)sessionID
                              callback:(void (^)(UIImage*))callback;
 
 // Stores the supplied thumbnail for the specified |sessionID|.
 - (void)setImage:(UIImage*)img withSessionID:(NSString*)sessionID;
 
 // Removes the cached thumbnail for the specified |sessionID|.
 - (void)removeImageWithSessionID:(NSString*)sessionID;
 
 // Request the grey image from the in-memory cache only.
 - (void)greyImageForSessionID:(NSString*)sessionID
                      callback:(void (^)(UIImage*))callback;
 @end
 
 #endif  // IOS_CHROME_BROWSER_SNAPSHOTS_SNAPSHOT_MANAGER_H_