add valid way to exit logging in pass through mode

_locales/en/messages.json

@@ -490,6 +490,9 @@
     "loggingStop": {
         "message": "Stop Logging"
     },
+    "loggingBack": {
+        "message": "Leave Logging / Disconnect"
+    },
     "loggingErrorLogFile": {
         "message": "Please select log file"
     },

tabs/logging.css

@@ -49,7 +49,10 @@
             line-height: 20px;
         }
     .tab-logging .buttons {
-        margin-top: 10px;
+        width: calc(100% - 20px);
+
+        position: absolute;
+        bottom: 10px;
     }
         .tab-logging .buttons a {
             display: block;
@@ -71,3 +74,9 @@
         .tab-logging .buttons a:hover {
             background-color: #dedcdc;
         }
+        .tab-logging .buttons .back {
+            display: none;
+
+            float: right;
+            margin: 0;
+        }

tabs/logging.html

@@ -34,5 +34,6 @@
     <div class="buttons">
         <a href="#" class="log_file" i18n="loggingButtonLogFile"></a>
         <a href="#" class="logging" i18n="loggingStart"></a>
+        <a href="#" class="back" i18n="loggingBack"></a>
     </div>
 </div>

tabs/logging.js

@@ -112,6 +112,22 @@ function tab_initialize_logging() {
             }
         });
 
+        if (MSP_pass_through) {
+            $('a.back').show();
+
+            $('a.back').click(function() {
+                if (GUI.connected_to) {
+                    $('a.connect').click();
+                } else {
+                    GUI.tab_switch_cleanup(function() {
+                        MSP_pass_through = false;
+                        $('#tabs > ul li').removeClass('active');
+                        tab_initialize_default();
+                    });
+                }
+            });
+        }
+
         chrome.storage.local.get('logging_file_entry', function(result) {
             if (result.logging_file_entry) {
                 chrome.fileSystem.restoreEntry(result.logging_file_entry, function(entry) {