Convert Print Preview layout and color radio buttons to select elements.

chrome/test/data/webui/print_preview.js

Index: chrome/test/data/webui/print_preview.js
diff --git a/chrome/test/data/webui/print_preview.js b/chrome/test/data/webui/print_preview.js
index 72d14104832c47ef4cfa8a868fc53a9cfd639b46..4d0701b41d877b46ebc8430ce52b5a8c5dd9dbab 100644
--- a/chrome/test/data/webui/print_preview.js
+++ b/chrome/test/data/webui/print_preview.js
@@ -775,8 +775,9 @@ TEST_F('PrintPreviewWebUITest', 'TestColorSettingsBothStandardDefaultColor',
   this.nativeLayer_.dispatchEvent(capsSetEvent);
 
   checkSectionVisible($('color-settings'), true);
-  expectTrue($('color-settings').querySelector('.color-option').checked);
-  expectFalse($('color-settings').querySelector('.bw-option').checked);
+  expectEquals(
+      'color',
+      $('color-settings').querySelector('.color-settings-select').value);
 });
 
 // Test that the color settings, two options, both standard, defaults to
@@ -797,8 +798,8 @@ TEST_F('PrintPreviewWebUITest',
   this.nativeLayer_.dispatchEvent(capsSetEvent);
 
   checkSectionVisible($('color-settings'), true);
-  expectFalse($('color-settings').querySelector('.color-option').checked);
-  expectTrue($('color-settings').querySelector('.bw-option').checked);
+  expectEquals(
+      'bw', $('color-settings').querySelector('.color-settings-select').value);
 });
 
 // Test that the color settings, two options, both custom, defaults to color.
@@ -818,8 +819,9 @@ TEST_F('PrintPreviewWebUITest',
   this.nativeLayer_.dispatchEvent(capsSetEvent);
 
   checkSectionVisible($('color-settings'), true);
-  expectTrue($('color-settings').querySelector('.color-option').checked);
-  expectFalse($('color-settings').querySelector('.bw-option').checked);
+  expectEquals(
+      'color',
+      $('color-settings').querySelector('.color-settings-select').value);
 });
 
 // Test to verify that duplex settings are set according to the printer