[MD Feedback] Add initial styling to feedback dialog.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index a5c2d6e83fdc6d797d089422d6d04d41e590fadb..fe77fe21bcdd9956ad5431c39bdb9d71e8db39a5 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -7887,25 +7887,25 @@ the Bookmarks menu.">
 
       <!-- MD Feedback Strings -->
       <message name="IDS_MD_FEEDBACK_HEADING" desc="Header text of the feedback dialog.">
-        Tell us what's happening.
+        Tell us what's happening
       </message>
       <message name="IDS_MD_FEEDBACK_OPEN_ENDED_LABEL" desc="Label for the open ended feedback input box that is initially blank. Users can write open ended feedback before submission.">
         Please enter your feedback here.
       </message>
       <message name="IDS_MD_FEEDBACK_URL_LABEL" desc="Label for the text input that may be prepopulated with the URL to be reported. Users are able to modify this text before submission..">
-        URL (optional):
+        URL
       </message>
       <message name="IDS_MD_FEEDBACK_USER_EMAIL_LABEL" desc="Label for the text input that may be prepopulated with the user's email. Users are able to modify this text before submission.">
-        Email (optional):
+        Email
       </message>
       <message name="IDS_MD_FEEDBACK_CANCEL_BUTTON" desc="Text for Cancel button of the feedback dialog. When clicked, the dialog will close without sending the feedback.">
         Cancel
       </message>
       <message name="IDS_MD_FEEDBACK_SEND_REPORT_BUTTON" desc="Text for Send Report button of the feedback dialog. When clicked, the feedback report will be sent.">
-        Send feedback
+        Send
       </message>
       <message name="IDS_MD_FEEDBACK_SCREENSHOT_LABEL" desc="Label for the checkbox to indicate whether the shown screenshot should be included in the feedback report.">
-        Include this screenshot:
+        Include this screenshot
       </message>
       <message name="IDS_MD_FEEDBACK_SEND_SYSTEM_INFO_LABEL" desc="Label for the checkbox to indicate whether the system info should be included in the feedback report.">
         Send system information
@@ -7923,6 +7923,9 @@ the Bookmarks menu.">
           <ph name="END_BOLD">&lt;/strong&gt;</ph>
         </message>
       </if>
+      <message name="IDS_MD_FEEDBACK_ADDITIONAL_INFO_LABEL" desc="Text for the group label to indicate that some fields are optional.">
+        Additional info (optional)
+      </message>
 
       <!-- Clear Browsing Data -->
       <message name="IDS_CLEAR_BROWSING_DATA_TITLE" desc="Dialog title">