Added "Remember Playback Speed" option

Option to control the use of the last video's playback speed for a newly
loaded video

inject.js

@@ -8,8 +8,11 @@ chrome.extension.sendMessage({}, function(response) {
         this.video = target;
         this.initializeControls();
 
-        chrome.storage.sync.get('speed', function(storage) {
-          var speed = storage.speed ? storage.speed : '1.00';
+        chrome.storage.sync.get({
+          speed: '1.00',
+          rememberSpeed: true
+        }, function(storage) {
+          var speed = storage.rememberSpeed ? storage.speed : '1.00';
           target.playbackRate = speed;
           this.speedIndicator.textContent = speed;
         }.bind(this));

options.css

@@ -80,7 +80,11 @@ input[type="text"] {
 
 label {
     display: inline-block;
-    width: 150px;
+    width: 170px;
+}
+
+label[for=rememberSpeed] {
+  width: 200px;
 }
 
 #status {

options.html

@@ -32,9 +32,13 @@
                 <input id="rewindTime" type="text" value=""/> 
             </div>
             <div class="row">
-                <label for="speedStep">Speed change step</label>
+                <label for="speedStep">Speed Change Step</label>
                 <input id="speedStep" type="text" value=""/>
             </div>
+            <div class="row">
+                <label for="rememberSpeed">Remember Playback Speed</label>
+                <input id="rememberSpeed" type="checkbox"/>
+            </div>
         </section>
 		
         <button id="save">Save</button>  <button id="restore">Restore Defaults</button>

options.js

@@ -36,6 +36,7 @@ function save_options() {
   var rewindKeyCode = document.getElementById('rewindKeyInput').keyCode;
   var slowerKeyCode = document.getElementById('slowerKeyInput').keyCode;
   var fasterKeyCode = document.getElementById('fasterKeyInput').keyCode;
+  var rememberSpeed = document.getElementById('rememberSpeed').checked;
   
   speedStep     = isNaN(speedStep) ? 0.1 : Number(speedStep);
   rewindTime    = isNaN(rewindTime) ? 10 : Number(rewindTime);
@@ -48,7 +49,8 @@ function save_options() {
     rewindTime:     rewindTime,
     rewindKeyCode:  rewindKeyCode,
     slowerKeyCode:  slowerKeyCode,
-    fasterKeyCode:  fasterKeyCode
+    fasterKeyCode:  fasterKeyCode,
+    rememberSpeed: rememberSpeed
   }, function() {
     // Update status to let user know options were saved.
     var status = document.getElementById('status');
@@ -66,13 +68,15 @@ function restore_options() {
     rewindTime: 10,
     rewindKeyCode: 65,
     slowerKeyCode: 83,
-    fasterKeyCode: 68
+    fasterKeyCode: 68,
+    rememberSpeed: true
   }, function(storage) {
     document.getElementById('speedStep').value = storage.speedStep.toFixed(2);
     document.getElementById('rewindTime').value = storage.rewindTime;
     updateShortcutInputText('rewindKeyInput', storage.rewindKeyCode);
     updateShortcutInputText('slowerKeyInput', storage.slowerKeyCode);
     updateShortcutInputText('fasterKeyInput', storage.fasterKeyCode);
+    document.getElementById('rememberSpeed').checked = storage.rememberSpeed;
   });
 }