[omnibox] Fix pedal buttons misplacement

The first time when match changes its height, pedal button is misplaced
and overlaps with another match. This was caused by setting wrong bounds
for button row.

Bug: 1121934
Change-Id: I297a3551c370f8efd7c4079e14b9c6fcace70e84
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2385378Reviewed-by: Bret Sepulveda <bsep@chromium.org>
Reviewed-by: Tommy Li <tommycli@chromium.org>
Commit-Queue: Olesia Marukhno <olesiamarukhno@google.com>
Cr-Commit-Position: refs/heads/master@{#803217}

chrome/browser/ui/views/omnibox/omnibox_result_view.cc

@@ -413,10 +413,9 @@ void OmniboxResultView::Layout() {
     // TODO(orinj): Determine and use the best way to set bounds; probably
     // GetPreferredSize() with a layout manager.
     // Put it below the suggestion view.
-    button_row_->SetBounds(0, button_row_->height(),
+    button_row_->SetBounds(0, suggestion_height,
                            suggestion_width - suggestion_indent,
-                           suggestion_height);
-    button_row_->Layout();
+                           button_row_->height());
   }
 }