Options2: Pull the trigger.

chrome/browser/resources/options2/browser_options_page.css

+#startupPageManagement.settings-list > :last-child {
+  border-top: 1px solid #d9d9d9;
+  padding: 5px 10px;
+}
+
+#startupPagesList {
+  min-height: 64px;
+}
+
+#startupPagesList .title {
+  width: 40%;
+}
+
+#startupPagesList .url {
+  -webkit-box-flex: 1;
+  color: #666;
+}
+
+#startupPagesList > * {
+  max-width: 700px;
+}
+
+#startupPagesListDropmarker {
+  background-clip: padding-box;
+  background-color: hsl(214, 91%, 65%);
+  border-bottom-color: transparent;
+  border-radius: 0;
+  border-top-color: transparent;
+  border: 2px solid hsl(214, 91%, 65%);
+  box-sizing: border-box;
+  display: none;
+  height: 6px;
+  overflow: hidden;
+  pointer-events: none;
+  position: fixed;
+  z-index: 10;
+}
+
+#customHomePageGroup {
+  display: -webkit-box;
+  -webkit-box-orient: horizontal;
+}
+
+#customHomePageGroup > :last-child {
+  -webkit-margin-start: 1ex;
+  -webkit-box-flex: 1;
+  position: relative;
+}
+
+#homepageURL {
+  box-sizing: border-box;
+  padding-top: 3px;
+  width: 100%;
+}
+
+#defaultSearchEngineGroup {
+  display: -webkit-box;
+  -webkit-box-orient: vertical;
+}
+
+#defaultSearchEngineGroup > div {
+  display: -webkit-box;
+  -webkit-box-orient: horizontal;
+}
+
+#defaultSearchEngine {
+  display: block;
+  -webkit-box-flex: 1;
+  max-width: 200px;
+}
+
+#defaultSearchManageEnginesButton {
+  margin-top: 0px;
+  -webkit-margin-start: 10px;
+}
+
+#defaultBrowserState {
+  margin-top: 6px;
+}
+
+#instantOption {
+  margin-bottom: 3px;
+  margin-top: 10px
+}
+
+#instantConfirmText {
+  font-family: inherit;
+  white-space: pre-wrap;
+  width: 500px;
+}
+
+#instantConfirmLearnMore {
+  position: absolute;
+  bottom: 18px;
+}