MD downloads: fix more date and page title issues

chrome/browser/resources/md_downloads/item.css

Index: chrome/browser/resources/md_downloads/item.css
diff --git a/chrome/browser/resources/md_downloads/item.css b/chrome/browser/resources/md_downloads/item.css
index c30de9a9b00e4eed40a9a77d025825c48bb0a0c7..87e78c886c35e45767f195c02c8e4ec8834db383 100644
--- a/chrome/browser/resources/md_downloads/item.css
+++ b/chrome/browser/resources/md_downloads/item.css
@@ -12,6 +12,13 @@
   margin-top: -16px;
 }
 
+/* Day separators. */
+:host(:not(:first-of-type):not([hide-date])) :-webkit-any(#content-wrapper,

[michaelpg, 2015/07/30 02:39:20]

this line: https://memegen.googleplex.com/templateimage?template=whoa4

:-webkit-any: https://memegen.googleplex.com/templateimage?template=mind_blown

:host(): why the outer parens? I see Polymer does this too but idk why.

[Dan Beam, 2015/07/30 02:46:43]

it's just the syntax:
https://drafts.csswg.org/css-scoping/#selectordef-host-function

+                                                          #since) {
+  border-top: 1px solid rgba(0, 0, 0, .2);  /* TODO(dbeam): real color. */
+  padding-top: 32px;
+}
+
 #date-container,
 #end-cap {
   flex: 1 0 var(--downloads-side-column-basis);
@@ -19,6 +26,9 @@
 
 #date-container > * {
   -webkit-margin-start: 24px;
+  color: #616161;
+  font-size: 107.69%;
+  font-weight: bold;
 }
 
 :host([hide-date]) #date-container {