Fix autosize related bugs in <extensionoptions>

chrome/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 "chrome/browser/guest_view/extension_options/extension_options_guest.h"
 
 #include "base/values.h"
 #include "chrome/browser/extensions/chrome_extension_web_contents_observer.h"
 #include "chrome/browser/guest_view/extension_options/extension_options_constants.h"
 #include "chrome/browser/profiles/profile.h"
@@ skipping 136 matching lines @@
   DispatchEventToEmbedder(new GuestViewBase::Event(
       extension_options_internal::OnSizeChanged::kEventName, args.Pass()));
 }
 
 bool ExtensionOptionsGuest::IsAutoSizeSupported() const {
   return true;
 }
 
 void ExtensionOptionsGuest::SetUpAutoSize() {
   // Read the autosize parameters passed in from the embedder.
-  bool auto_size_enabled;
+  bool auto_size_enabled = false;
   extra_params()->GetBoolean(extensionoptions::kAttributeAutoSize,
                              &auto_size_enabled);
 
   int max_height = 0;
   int max_width = 0;
   extra_params()->GetInteger(extensionoptions::kAttributeMaxHeight,
                              &max_height);
   extra_params()->GetInteger(extensionoptions::kAttributeMaxWidth, &max_width);
 
   int min_height = 0;
   int min_width = 0;
   extra_params()->GetInteger(extensionoptions::kAttributeMinHeight,
                              &min_height);
   extra_params()->GetInteger(extensionoptions::kAttributeMinWidth, &min_width);
 
   // Call SetAutoSize to apply all the appropriate validation and clipping of
   // values.
   SetAutoSize(
       true, gfx::Size(min_width, min_height), gfx::Size(max_width, max_height));
 }