Add MD Feedback switch.

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 37cfdec27ce122003282dce3a6a2d47d82a070e8..171923b0558e43d8b1fa709a918d9c0c26da4062 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -4981,6 +4981,14 @@ Keep your key file in a safe place. You will need it to create new versions of y
         If enabled, the chrome://extensions/ URL loads the Material Design extensions page.
       </message>
 
+      <!-- Material Design version of feedback form -->
+      <message name="IDS_FLAGS_ENABLE_MATERIAL_DESIGN_FEEDBACK_NAME" desc="Name for the flag to enable the material design feedback UI.">
+        Enable Material Design feedback
+      </message>
+      <message name="IDS_FLAGS_ENABLE_MATERIAL_DESIGN_FEEDBACK_DESCRIPTION" desc="Description for the flag to enable the material design feedback UI.">
+        If enabled, reporting an issue will load the Material Design feedback UI.
+      </message>
+
       <!-- Report URL to SafeSearch -->
       <message name="IDS_FLAGS_SAFE_SEARCH_URL_REPORTING_NAME" desc="Name for the flag to enable reporting URLs to SafeSearch.">
         SafeSearch URLs reporting.