Fix TableViewTextCell background

-When TableViewTextCell is tapped the background for the cell turned to
gray while the background for the textLabel stays white.
-Removing the code which sets TableViewTextCell textLabel background
solves the problem.

Bug: 984545
Change-Id: I615041f21b29e4c93e7d6b98b87d40be02c636e8
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/1778043
Commit-Queue: Reda Tawfik <redatawfik@google.com>
Reviewed-by: Sergio Collazos <sczs@chromium.org>
Reviewed-by: Javier Ernesto Flores Robles <javierrobles@chromium.org>
Reviewed-by: Gauthier Ambard <gambard@chromium.org>
Cr-Commit-Position: refs/heads/master@{#693185}

ios/chrome/browser/ui/table_view/cells/table_view_text_item.mm

@@ -46,13 +46,6 @@
         self.accessibilityLabel ? self.accessibilityLabel : self.text;
   }
 
-  // Decide cell.textLabel.backgroundColor in order:
-  //   1. styler.cellBackgroundColor;
-  //   2. styler.tableViewBackgroundColor.
-  cell.textLabel.backgroundColor = styler.cellBackgroundColor
-                                       ? styler.cellBackgroundColor
-                                       : styler.tableViewBackgroundColor;
-
   // Decide cell.textLabel.textColor in order:
   //   1. this.textColor;
   //   2. styler.cellTitleColor;

ios/chrome/browser/ui/table_view/cells/table_view_text_item_unittest.mm

@@ -69,10 +69,13 @@ TEST_F(TableViewTextItemTest, ConfigureCellWithStyler) {
   ChromeTableViewStyler* styler = [[ChromeTableViewStyler alloc] init];
   UIColor* testTextColor = UIColor.redColor;
   styler.cellTitleColor = testTextColor;
-  UIColor* testBackgroundColor = UIColor.blueColor;
-  styler.tableViewBackgroundColor = testBackgroundColor;
+  UIColor* testCellBackgroundColor = UIColor.blueColor;
+  styler.tableViewBackgroundColor = testCellBackgroundColor;
   [item configureCell:cell withStyler:styler];
-  EXPECT_NSEQ(testBackgroundColor, cell.textLabel.backgroundColor);
+  EXPECT_NSEQ(testCellBackgroundColor, cell.backgroundColor);
+  // TextLabel.backgroundColor has to be clear in (IOS 13) as the cell
+  // background color doesn't apply to the textlabel background color anymore.
+  EXPECT_NSEQ(UIColor.clearColor, cell.textLabel.backgroundColor);
   EXPECT_NSEQ(testTextColor, cell.textLabel.textColor);
 }