[omnibox] Align tab icon vertically

Bottom wasn't lined up.

Bug: 780835
Change-Id: Id4f7dcc4d590e2f5f3f83457cea2095e7a1011cf
Reviewed-on: https://chromium-review.googlesource.com/800791Reviewed-by: Justin Donnelly <jdonnelly@chromium.org>
Commit-Queue: Justin Donnelly <jdonnelly@chromium.org>
Cr-Commit-Position: refs/heads/master@{#520602}

components/omnibox/browser/vector_icons/tab.icon

@@ -3,14 +3,14 @@
 // found in the LICENSE file.
 
 CANVAS_DIMENSIONS, 32,
-MOVE_TO, 3, 22,
-LINE_TO, 7, 8,
-LINE_TO, 24, 8,
-LINE_TO, 28, 22,
-LINE_TO, 24, 22,
-LINE_TO, 22, 12,
-LINE_TO, 9, 12,
-LINE_TO, 7, 22,
-LINE_TO, 3, 22,
+MOVE_TO, 3, 26,
+LINE_TO, 7, 12,
+LINE_TO, 24, 12,
+LINE_TO, 28, 26,
+LINE_TO, 24, 26,
+LINE_TO, 22, 16,
+LINE_TO, 9, 16,
+LINE_TO, 7, 26,
+LINE_TO, 3, 26,
 CLOSE,
 END