Disable scroll-bars in shrink-to-fit mode.

remoting/webapp/client_session.js

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 /**
  * @fileoverview
  * Class handling creation and teardown of a remoting client session.
  *
  * The ClientSession class controls lifetime of the client plugin
  * object and provides the plugin with the functionality it needs to
@@ skipping 634 matching lines @@
     var options = {};
     options[remoting.ClientSession.KEY_SHRINK_TO_FIT] = this.shrinkToFit_;
     options[remoting.ClientSession.KEY_RESIZE_TO_CLIENT] = this.resizeToClient_;
     remoting.HostSettings.save(this.hostId, options);
   }
 
   this.updateDimensions();
   if (needsScrollReset) {
     this.scroll_(0, 0);
   }
+
+  // TODO(jamiewalch): crbug.com/252796: Remove this once crbug.com/240772
+  // is fixed.
+  if (this.shrinkToFit_) {
+    document.body.parentNode.classList.add('no-scroll');

[Wez, 2013/06/21 19:01:05]

I assume that classList has set behaviour, i.e. it won't accumulate duplicates
if we keep adding?

[Jamie, 2013/06/21 19:21:27]

Correct.

+  } else {
+    document.body.parentNode.classList.remove('no-scroll');
+  }
 }
 
 /**
  * Called when the client receives its first frame.
  *
  * @return {void} Nothing.
  */
 remoting.ClientSession.prototype.onFirstFrameReceived = function() {
   this.hasReceivedFrame_ = true;
 };
@@ skipping 568 matching lines @@
       var lateAdjustment = 1 + (now - expected) / timeout;
       if (!that.scroll_(lateAdjustment * dx, lateAdjustment * dy)) {
         that.bumpScrollTimer_ = window.setTimeout(
             function() { repeatScroll(now + timeout); },
             timeout);
       }
     };
     repeatScroll(new Date().getTime());
   }
 };