[iOS] Fix iOS 13 bug where Settings.app doesn't scroll

As described in the linked bug, on iOS 13, in Settings.app, after the
keyboard is opened, the scroll view doesn't adjust and the bottom rows
are hidden beneath the keyboard.

This workaround adds a bunch of blank lines to the end of the settings
so the actual content can still be seen above the keyboard.

Bug: 1056606
Change-Id: If34ae9356a42898f5616fde8cafdd6ea00ccb2e1
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2077932Reviewed-by: Sylvain Defresne <sdefresne@chromium.org>
Commit-Queue: Robbie Gibson <rkgibson@google.com>
Cr-Commit-Position: refs/heads/master@{#745035}

ios/chrome/browser/resources/Settings.bundle/Experimental.plist

@@ -254,6 +254,82 @@
 			<key>AutocorrectionType</key>
 			<string>No</string>
 		</dict>
+		<dict>
+			<key>Type</key>
+			<string>PSGroupSpecifier</string>
+			<key>Title</key>
+			<string>Blank lines for iOS 13 bug</string>
+		</dict>
+		<dict>
+			<key>Type</key>
+			<string>PSTitleValueSpecifier</string>
+			<key>Title</key>
+			<string>See crbug.com/1056606</string>
+			<key>DefaultValue</key>
+			<string></string>
+			<key>Key</key>
+			<string>a</string>
+		</dict>
+		<dict>
+			<key>Type</key>
+			<string>PSTitleValueSpecifier</string>
+			<key>Title</key>
+			<string></string>
+			<key>DefaultValue</key>
+			<string></string>
+			<key>Key</key>
+			<string>b</string>
+		</dict>
+		<dict>
+			<key>Type</key>
+			<string>PSTitleValueSpecifier</string>
+			<key>Title</key>
+			<string></string>
+			<key>DefaultValue</key>
+			<string></string>
+			<key>Key</key>
+			<string>c</string>
+		</dict>
+		<dict>
+			<key>Type</key>
+			<string>PSTitleValueSpecifier</string>
+			<key>Title</key>
+			<string></string>
+			<key>DefaultValue</key>
+			<string></string>
+			<key>Key</key>
+			<string>d</string>
+		</dict>
+		<dict>
+			<key>Type</key>
+			<string>PSTitleValueSpecifier</string>
+			<key>Title</key>
+			<string></string>
+			<key>DefaultValue</key>
+			<string></string>
+			<key>Key</key>
+			<string>e</string>
+		</dict>
+		<dict>
+			<key>Type</key>
+			<string>PSTitleValueSpecifier</string>
+			<key>Title</key>
+			<string></string>
+			<key>DefaultValue</key>
+			<string></string>
+			<key>Key</key>
+			<string>f</string>
+		</dict>
+		<dict>
+			<key>Type</key>
+			<string>PSTitleValueSpecifier</string>
+			<key>Title</key>
+			<string></string>
+			<key>DefaultValue</key>
+			<string></string>
+			<key>Key</key>
+			<string>g</string>
+		</dict>
 	</array>
 </dict>
 </plist>