Add minimum TLS version control to about:flags and Finch gate it.

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 98748adabb4a3883751f5c37167abb6f6462ab20..c19f81c66fecdbfbd8088db3f169285626f404e4 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -13984,6 +13984,29 @@ Do you accept?
       </message>
     </if>
 
+    <!-- Strings for controlling the minimum SSL/TLS version in about:flags. -->
+    <message name="IDS_FLAGS_SSL_VERSION_MIN_NAME" desc="Name of about::flags option to control the minimum supported SSL/TLS version">
+      Minimum SSL/TLS version supported.
+    </message>
+    <message name="IDS_FLAGS_SSL_VERSION_MIN_DESCRIPTION" desc="Description of about::flags option to control the minimum supported SSL/TLS version">
+      Configure the minimum SSL/TLS version that can be used when connecting to HTTPS servers.
+    </message>
+    <message name="IDS_FLAGS_SSL_VERSION_DEFAULT" desc="The description of the default value for the minimum SSL/TLS version.">
+      Default
+    </message>
+    <message name="IDS_FLAGS_SSL_VERSION_SSLV3" desc="Name of SSLv3. This is a technical term and it's very unlikely that any translation will be needed.">
+      SSLv3
+    </message>
+    <message name="IDS_FLAGS_SSL_VERSION_TLSV1" desc="Name of TLS 1.0. This is a technical term and it's very unlikely that any translation will be needed.">
+      TLS 1.0
+    </message>
+    <message name="IDS_FLAGS_SSL_VERSION_TLSV11" desc="Name of TLS 1.1. This is a technical term and it's very unlikely that any translation will be needed.">
+      TLS 1.1
+    </message>
+    <message name="IDS_FLAGS_SSL_VERSION_TLSV12" desc="Name of TLS 1.2. This is a technical term and it's very unlikely that any translation will be needed.">
+      TLS 1.2
+    </message>
+
     <!-- Simple Cache Backend experiment. -->
     <message name="IDS_FLAGS_ENABLE_SIMPLE_CACHE_BACKEND_NAME" desc="Name of about:flags option to turn on the Simple Cache Backend">
       Simple Cache for HTTP.