Gtk3: Add themable location bar border color

chrome/browser/themes/theme_properties.h

Index: chrome/browser/themes/theme_properties.h
diff --git a/chrome/browser/themes/theme_properties.h b/chrome/browser/themes/theme_properties.h
index 3e328d7a0c79ef8430117fb7895b226124c36325..7c5a6919486333c66908a8da51102d3b43d9dab5 100644
--- a/chrome/browser/themes/theme_properties.h
+++ b/chrome/browser/themes/theme_properties.h
@@ -89,6 +89,9 @@ class ThemeProperties {
     // The color of a disabled toolbar button's icon.
     COLOR_TOOLBAR_BUTTON_ICON_INACTIVE,
 
+    // The color of the border drawn around the location bar.
+    COLOR_TOOLBAR_ENTRY_BORDER,

[Evan Stade, 2017/02/08 16:31:12]

this name seems gtk-inspired rather than chrome inspired.

[Tom (Use chromium acct), 2017/02/08 21:20:25]

you are correct :)
I renamed it to COLOR_LOCATION_BAR_BORDER

+
     // The color of the line separating the top of the toolbar from the region
     // above. For a tabbed browser window, this is the line along the bottom
     // edge of the tabstrip, the stroke around the tabs, and the new tab button