Fixed the bug that caused extension options not to fit their overlays properly when zoomed.

extensions/browser/guest_view/extension_options/extension_options_guest.cc

 // Copyright 2014 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.
 
 #include "extensions/browser/guest_view/extension_options/extension_options_guest.h"
 
 #include "base/metrics/user_metrics.h"
 #include "base/values.h"
 #include "components/crx_file/id_util.h"
 #include "content/public/browser/navigation_details.h"
@@ skipping 144 matching lines @@
 bool ExtensionOptionsGuest::IsAutoSizeSupported() const {
   return true;
 }
 
 bool ExtensionOptionsGuest::IsPreferredSizeModeEnabled() const {
   return true;
 }
 
 void ExtensionOptionsGuest::OnPreferredSizeChanged(const gfx::Size& pref_size) {
   extension_options_internal::PreferredSizeChangedOptions options;
-  options.width = pref_size.width();
-  options.height = pref_size.height();
+  // Convert the size from physical pixels to logical pixels.
+  options.width = PhysicalPixelsToLogicalPixels(pref_size.width());
+  options.height = PhysicalPixelsToLogicalPixels(pref_size.height());
   DispatchEventToView(new GuestViewBase::Event(
       extension_options_internal::OnPreferredSizeChanged::kEventName,
       options.ToValue()));
 }
 
 content::WebContents* ExtensionOptionsGuest::GetAssociatedWebContents() const {
   return web_contents();
 }
 
 content::WebContents* ExtensionOptionsGuest::OpenURLFromTab(
@@ skipping 78 matching lines @@
   return handled;
 }
 
 void ExtensionOptionsGuest::OnRequest(
     const ExtensionHostMsg_Request_Params& params) {
   extension_function_dispatcher_->Dispatch(params,
                                            web_contents()->GetRenderViewHost());
 }
 
 }  // namespace extensions