Make the malware interstitial checkbox match the button style

Previously the malware interstitial checkbox had a white background. This CL changes the checkbox to have a red background and white outline, like the primary button.

BUG=
R=bauerb@chromium.org

Review URL: https://codereview.chromium.org/404943002

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@284455 0039d316-1c4b-4281-b951-d872f2087c98

chrome/browser/resources/ssl/interstitial_v2.css

@@ -180,27 +180,28 @@ input[type=checkbox] {
 }
 
 .styled-checkbox label {
-  background-color: white;
+  background: transparent;
+  border: white solid 1px;
   border-radius: 2px;
-  height: 16px;
+  height: 14px;
   left: 0;
   position: absolute;
   right: 0;
   top: 0;
-  width: 16px;
+  width: 14px;
 }
 
 .styled-checkbox label::after {
   background: transparent;
-  border: 2px solid rgb(217, 69, 61);
+  border: 2px solid white;
   border-right-width: 0;
   border-top-width: 0;
   content: '';
   height: 4px;
-  left: 3px;
+  left: 2px;
   opacity: 0.3;
   position: absolute;
-  top: 4px;
+  top: 3px;
   transform: rotate(-45deg);
   width: 9px;
 }