[Password Generation] Update Aura UI

ui/views/controls/styled_label.cc

Index: ui/views/controls/styled_label.cc
diff --git a/ui/views/controls/styled_label.cc b/ui/views/controls/styled_label.cc
index e7ee56c0b44de2b806803fd4da900308c5ade9d4..3bf7f18030c2b8a665676f1fdec2744e771ebf0d 100644
--- a/ui/views/controls/styled_label.cc
+++ b/ui/views/controls/styled_label.cc
@@ -94,7 +94,8 @@ bool StyledLabel::StyleRange::operator<(
 
 StyledLabel::StyledLabel(const base::string16& text,
                          StyledLabelListener* listener)
-    : listener_(listener),
+    : line_height_(-1),
+      listener_(listener),
       displayed_on_background_color_set_(false),
       auto_color_readability_enabled_(true) {
   base::TrimWhitespace(text, base::TRIM_TRAILING, &text_);
@@ -133,6 +134,11 @@ void StyledLabel::SetDefaultStyle(const RangeStyleInfo& style_info) {
   PreferredSizeChanged();
 }
 
+void StyledLabel::SetLineHeight(int line_height) {
+  line_height_ = line_height;
+  PreferredSizeChanged();
+}
+
 void StyledLabel::SetDisplayedOnBackgroundColor(SkColor color) {
   displayed_on_background_color_ = color;
   displayed_on_background_color_set_ = true;
@@ -193,7 +199,7 @@ gfx::Size StyledLabel::CalculateAndDoLayout(int width, bool dry_run) {
   if (width <= 0 || text_.empty())
     return gfx::Size();
 
-  const int line_height = CalculateLineHeight(font_list_);
+  const int line_height = GetLineHeight();
   // The index of the line we're on.
   int line = 0;
   // The x position (in pixels) of the line we're on, relative to content
@@ -295,11 +301,10 @@ gfx::Size StyledLabel::CalculateAndDoLayout(int width, bool dry_run) {
     gfx::Insets focus_border_insets(label->GetInsets());
     focus_border_insets += -label->View::GetInsets();
     const gfx::Size view_size = label->GetPreferredSize();
-    DCHECK_EQ(line_height, view_size.height() - focus_border_insets.height());
     if (!dry_run) {
       label->SetBoundsRect(gfx::Rect(
           gfx::Point(GetInsets().left() + x - focus_border_insets.left(),
-                     GetInsets().top() + line * line_height -
+                     GetInsets().top() + GetOffsetForLine(line) -
                          focus_border_insets.top()),
           view_size));
       AddChildView(label.release());
@@ -309,7 +314,31 @@ gfx::Size StyledLabel::CalculateAndDoLayout(int width, bool dry_run) {
     remaining_string = remaining_string.substr(chunk.size());
   }
 
-  return gfx::Size(width, (line + 1) * line_height + GetInsets().height());
+  return gfx::Size(
+      width,
+      (line + 1) * line_height  + GetInsets().height());
+}
+
+int StyledLabel::GetLineHeight() const {
+  if (line_height_ >= 0)
+    return line_height_;
+  return CalculateLineHeight(font_list_);
+}
+
+int StyledLabel::GetOffsetForLine(int line) const {
+  int default_line_height = CalculateLineHeight(font_list_);
+
+  // If no user override, return default.
+  if (line_height_ < 0)
+    return default_line_height * line;
+
+  // If line height is less than default, no centering needed.
+  if (line_height_ < default_line_height)
+    return line_height_ * line;
+
+  // Center text in the space available.
+  int interline_offset = (line_height_ - default_line_height) / 2;
+  return line_height_ * line + interline_offset;
 }
 
 }  // namespace views