Switch gfx::Range to use uint32_t instead of size_t.

content/browser/renderer_host/render_widget_host_view_mac.mm

Index: content/browser/renderer_host/render_widget_host_view_mac.mm
diff --git a/content/browser/renderer_host/render_widget_host_view_mac.mm b/content/browser/renderer_host/render_widget_host_view_mac.mm
index acc1c8ad45e77343ce27625da97fbecbb50dacec..a73a09ff790015c68ed33b744e1bbc1f3c9dd1a0 100644
--- a/content/browser/renderer_host/render_widget_host_view_mac.mm
+++ b/content/browser/renderer_host/render_widget_host_view_mac.mm
@@ -1310,7 +1310,8 @@ bool RenderWidgetHostViewMac::GetLineBreakIndex(
   // 75% of maximum height.
   // TODO(nona): Check the threshold is reliable or not.
   // TODO(nona): Bidi support.
-  const size_t loop_end_idx = std::min(bounds.size(), range.end());
+  const size_t loop_end_idx =
+      std::min(bounds.size(), static_cast<size_t>(range.end()));
   int max_height = 0;
   int min_y_offset = std::numeric_limits<int32_t>::max();
   for (size_t idx = range.start(); idx < loop_end_idx; ++idx) {