Don't update TabSpecificContentSettings on same-page navigation

chrome/browser/content_settings/tab_specific_content_settings.cc

 // 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.
 
 #include "chrome/browser/content_settings/tab_specific_content_settings.h"
 
 #include <list>
 
 #include "base/command_line.h"
 #include "base/lazy_instance.h"
@@ skipping 782 matching lines @@
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_ContentBlocked,
                         OnContentBlockedWithDetail)
     IPC_MESSAGE_HANDLER(ChromeViewHostMsg_DidUseKeygen, OnDidUseKeygen)
     IPC_MESSAGE_UNHANDLED(handled = false)
   IPC_END_MESSAGE_MAP()
   return handled;
 }
 
 void TabSpecificContentSettings::DidStartNavigation(
     content::NavigationHandle* navigation_handle) {
-  if (!navigation_handle->IsInMainFrame())
+  if (!navigation_handle->IsInMainFrame() || navigation_handle->IsSamePage())
     return;
 
   const content::NavigationController& controller =
       web_contents()->GetController();
   content::NavigationEntry* last_committed_entry =
       controller.GetLastCommittedEntry();
   if (last_committed_entry)
     previous_url_ = last_committed_entry->GetURL();
 
   // If we're displaying a network error page do not reset the content
@@ skipping 96 matching lines @@
       static_cast<MicrophoneCameraStateFlags>(
           TabSpecificContentSettings::MICROPHONE_ACCESSED |
           TabSpecificContentSettings::MICROPHONE_BLOCKED |
           TabSpecificContentSettings::CAMERA_ACCESSED |
           TabSpecificContentSettings::CAMERA_BLOCKED);
   OnMediaStreamPermissionSet(
       web_contents()->GetLastCommittedURL(),
       media_blocked,
       std::string(), std::string(), std::string(), std::string());
 }