Use chars().count() rather than char_len().

The latter is obsolete in current Rust.

components/gfx/font.rs

@@ -157,7 +157,7 @@ impl Font {
             Some(glyphs) => return (*glyphs).clone(),
         }
 
-        let mut glyphs = GlyphStore::new(text.char_len() as int,
+        let mut glyphs = GlyphStore::new(text.chars().count() as int,
                                          options.flags.contains(IS_WHITESPACE_SHAPING_FLAG));
         shaper.as_ref().unwrap().shape_text(text, options, &mut glyphs);
 

components/gfx/text/shaping/harfbuzz.rs

@@ -274,7 +274,7 @@ impl Shaper {
         let glyph_data = ShapedGlyphData::new(buffer);
         let glyph_count = glyph_data.len();
         let byte_max = text.len() as int;
-        let char_max = text.char_len() as int;
+        let char_max = text.chars().count() as int;
 
         // GlyphStore records are indexed by character, not byte offset.
         // so, we must be careful to increment this when saving glyph entries.

components/layout/text.rs

@@ -138,7 +138,7 @@ impl TextRunScanner {
                 };
 
                 let mut new_line_pos = Vec::new();
-                let old_length = CharIndex(run_text.as_slice().char_len() as int);
+                let old_length = CharIndex(run_text.chars().count() as int);
                 last_whitespace = util::transform_text(in_fragment.as_slice(),
                                                        compression,
                                                        last_whitespace,
@@ -146,7 +146,7 @@ impl TextRunScanner {
                                                        &mut new_line_pos);
                 new_line_positions.push(NewLinePositions(new_line_pos));
 
-                let added_chars = CharIndex(run_text.as_slice().char_len() as int) - old_length;
+                let added_chars = CharIndex(run_text.chars().count() as int) - old_length;
                 new_ranges.push(Range::new(char_total, added_chars));
                 char_total = char_total + added_chars;
             }

components/script/dom/htmlinputelement.rs

@@ -161,7 +161,7 @@ impl LayoutHTMLInputElementHelpers for JS<HTMLInputElement> {
             InputType::InputReset => get_raw_attr_value(self).unwrap_or_else(|| DEFAULT_RESET_VALUE.to_owned()),
             InputType::InputPassword => {
                 let raw = get_raw_textinput_value(self);
-                String::from_char(raw.char_len(), '●')
+                raw.chars().map(|_| '●').collect()
             }
             _ => get_raw_textinput_value(self),
         }

components/script/textinput.rs

@@ -135,7 +135,7 @@ impl TextInput {
 
         let new_lines = {
             let prefix = self.lines[begin.line].slice_chars(0, begin.index);
-            let suffix = self.lines[end.line].slice_chars(end.index, self.lines[end.line].char_len());
+            let suffix = self.lines[end.line].slice_chars(end.index, self.lines[end.line].chars().count());
             let lines_prefix = self.lines.slice(0, begin.line);
             let lines_suffix = self.lines.slice(end.line + 1, self.lines.len());
 
@@ -150,7 +150,7 @@ impl TextInput {
             insert_lines[0] = new_line;
 
             let last_insert_lines_index = insert_lines.len() - 1;
-            self.edit_point.index = insert_lines[last_insert_lines_index].char_len();
+            self.edit_point.index = insert_lines[last_insert_lines_index].chars().count();
             self.edit_point.line = begin.line + last_insert_lines_index;
 
             insert_lines[last_insert_lines_index].push_str(suffix);
@@ -167,7 +167,7 @@ impl TextInput {
 
     /// Return the length of the current line under the editing point.
     fn current_line_length(&self) -> uint {
-        self.lines[self.edit_point.line].char_len()
+        self.lines[self.edit_point.line].chars().count()
     }
 
     /// Adjust the editing point position by a given of lines. The resulting column is
@@ -260,7 +260,7 @@ impl TextInput {
         });
         let last_line = self.lines.len() - 1;
         self.edit_point.line = last_line;
-        self.edit_point.index = self.lines[last_line].char_len();
+        self.edit_point.index = self.lines[last_line].chars().count();
     }
 
     /// Remove the current selection.