Remove cr_string* functions from NSString+CrStringDrawing.h

These were added in https://codereview.chromium.org/974913006, last used
in https://codereview.chromium.org/974913006 and do not seem to have
been used since https://codereview.chromium.org/1707603002.

Furthermore, cr_stringByElidingToFitSize uses API that is not available
on tvOS (labelFontSize), so getting rid of it also avoids another tvOS
ifdef in the code.

Bug: 391914246
Change-Id: Iad56c1030deb76f1f7a9e48c914fa9ecad076969
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/6308565
Commit-Queue: Raphael Kubo da Costa <kubo@igalia.com>
Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Cr-Commit-Position: refs/heads/main@{#1425790}

ui/gfx/ios/NSString+CrStringDrawing.h

@@ -50,16 +50,6 @@
 // sizeWithAttributes: (crbug.com/364419).
 - (CGSize)cr_sizeWithFont:(UIFont*)font;
 
-// If |index| is 0, returns an empty string.
-// If |index| is >= than self.length, returns self.
-// Otherwise, returns string cut to have |index| characters with an
-// ellipsis at the end.
-- (NSString*)cr_stringByCuttingToIndex:(NSUInteger)index;
-
-// Returns an elided version of string that fits in |bounds|.
-// System font of Label size is used for determining the string drawing size.
-- (NSString*)cr_stringByElidingToFitSize:(CGSize)bounds;
-
 @end
 
 #endif  // UI_GFX_IOS_NSSTRING_CRSTRINGDRAWING_H_

ui/gfx/ios/NSString+CrStringDrawing.mm

@@ -41,35 +41,4 @@
   return CGSizeMake(ceil(size.width), ceil(size.height));
 }
 
-- (NSString*)cr_stringByCuttingToIndex:(NSUInteger)index {
-  if (index == 0)
-    return @"";
-  if (index >= self.length) {
-    return self;
-  }
-  return [[self substringToIndex:(index - 1)] stringByAppendingString:@"…"];
-}
-
-- (NSString*)cr_stringByElidingToFitSize:(CGSize)bounds {
-  CGSize sizeForGuess = CGSizeMake(bounds.width, CGFLOAT_MAX);
-  // Use binary search on the string's length.
-  size_t lo = 0;
-  size_t hi = self.length;
-  size_t guess = 0;
-  for (guess = (lo + hi) / 2; lo < hi; guess = (lo + hi) / 2) {
-    NSString* tempString = [self cr_stringByCuttingToIndex:guess];
-    UIFont* font = [UIFont systemFontOfSize:UIFont.labelFontSize];
-    CGSize sizeGuess =
-        [tempString cr_boundingSizeWithSize:sizeForGuess font:font];
-    if (sizeGuess.height > bounds.height) {
-      hi = guess - 1;
-      if (hi < lo)
-        hi = lo;
-    } else {
-      lo = guess + 1;
-    }
-  }
-  return [self cr_stringByCuttingToIndex:lo];
-}
-
 @end

ui/gfx/ios/NSString+CrStringDrawing_unittest.mm

@@ -150,24 +150,4 @@ TEST_F(NSStringCrStringDrawing, PixelAlignedSizeWithFont) {
   }
 }
 
-TEST_F(NSStringCrStringDrawing, CutString) {
-  EXPECT_NSEQ(@"foo", [@"foo" cr_stringByCuttingToIndex:4]);
-  EXPECT_NSEQ(@"bar", [@"bar" cr_stringByCuttingToIndex:3]);
-  EXPECT_NSEQ(@"f…", [@"foo" cr_stringByCuttingToIndex:2]);
-  EXPECT_NSEQ(@"…", [@"bar" cr_stringByCuttingToIndex:1]);
-  EXPECT_NSEQ(@"", [@"foo" cr_stringByCuttingToIndex:0]);
-}
-
-TEST_F(NSStringCrStringDrawing, ElideStringToFitInRect) {
-  NSString* result =
-      [@"lorem ipsum dolores" cr_stringByElidingToFitSize:CGSizeZero];
-  EXPECT_NSEQ(@"", result);
-  result = [@"lorem ipsum dolores"
-      cr_stringByElidingToFitSize:CGSizeMake(1000, 1000)];
-  EXPECT_NSEQ(@"lorem ipsum dolores", result);
-  result =
-      [@"lorem ipsum dolores" cr_stringByElidingToFitSize:CGSizeMake(30, 50)];
-  EXPECT_TRUE([@"lorem ipsum dolores" length] > [result length]);
-}
-
 }  // namespace