Remove full-screen thumbnail.

SignalServiceKit/src/Messages/Attachments/TSAttachmentStream.h

@@ -104,7 +104,6 @@ typedef void (^OWSThumbnailFailure)(void);
                                          failure:(OWSThumbnailFailure)failure;
 - (nullable UIImage *)thumbnailImageSmallWithSuccess:(OWSThumbnailSuccess)success failure:(OWSThumbnailFailure)failure;
 - (nullable UIImage *)thumbnailImageMediumWithSuccess:(OWSThumbnailSuccess)success failure:(OWSThumbnailFailure)failure;
-- (nullable UIImage *)thumbnailImageLargeWithSuccess:(OWSThumbnailSuccess)success failure:(OWSThumbnailFailure)failure;
 - (nullable UIImage *)thumbnailImageSmallSync;
 
 // This method should only be invoked by OWSThumbnailService.

SignalServiceKit/src/Messages/Attachments/TSAttachmentStream.m

@@ -16,11 +16,6 @@ NS_ASSUME_NONNULL_BEGIN
 
 const NSUInteger kThumbnailDimensionPointsSmall = 300;
 const NSUInteger kThumbnailDimensionPointsMedium = 800;
-// This size is large enough to render full screen.
-const NSUInteger ThumbnailDimensionPointsLarge() {
-    CGSize screenSizePoints = UIScreen.mainScreen.bounds.size;
-    return MAX(screenSizePoints.width, screenSizePoints.height);
-}
 
 typedef void (^OWSLoadedThumbnailSuccess)(OWSLoadedThumbnail *loadedThumbnail);
 
@@ -654,10 +649,8 @@ typedef void (^OWSLoadedThumbnailSuccess)(OWSLoadedThumbnail *loadedThumbnail);
     NSUInteger thumbnailDimensionPoints;
     if (maxDimensionHint <= kThumbnailDimensionPointsSmall) {
         thumbnailDimensionPoints = kThumbnailDimensionPointsSmall;
-    } else if (maxDimensionHint <= kThumbnailDimensionPointsMedium) {
-        thumbnailDimensionPoints = kThumbnailDimensionPointsMedium;
     } else {
-        thumbnailDimensionPoints = ThumbnailDimensionPointsLarge();
+        thumbnailDimensionPoints = kThumbnailDimensionPointsMedium;
     }
 
     return [self thumbnailImageWithThumbnailDimensionPoints:thumbnailDimensionPoints success:success failure:failure];
@@ -677,13 +670,6 @@ typedef void (^OWSLoadedThumbnailSuccess)(OWSLoadedThumbnail *loadedThumbnail);
                                                     failure:failure];
 }
 
-- (nullable UIImage *)thumbnailImageLargeWithSuccess:(OWSThumbnailSuccess)success failure:(OWSThumbnailFailure)failure
-{
-    return [self thumbnailImageWithThumbnailDimensionPoints:ThumbnailDimensionPointsLarge()
-                                                    success:success
-                                                    failure:failure];
-}
-
 - (nullable UIImage *)thumbnailImageWithThumbnailDimensionPoints:(NSUInteger)thumbnailDimensionPoints
                                                          success:(OWSThumbnailSuccess)success
                                                          failure:(OWSThumbnailFailure)failure