Fix privacy issues related to about:net-internals and about:dns

and clearing the history. 

When clearing the history, both NetLog and the host cache are
now cleared.

BUG=65338
TEST=none

Review URL: http://codereview.chromium.org/6312076

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@74775 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 11 insertions, 4 deletions

diff --git a/chrome/browser/io_thread.cc b/chrome/browser/io_thread.cc
index bc374b2..c6b8c7b 100644
--- a/chrome/browser/io_thread.cc
+++ b/chrome/browser/io_thread.cc
@@ -500,14 +500,21 @@ void IOThread::ChangedToOnTheRecordOnIOThread() {
 
   // Clear the host cache to avoid showing entries from the OTR session
   // in about:net-internals.
+  ClearHostCache();
+
+  // Clear all of the passively logged data.
+  // TODO(eroman): this is a bit heavy handed, really all we need to do is
+  //               clear the data pertaining to off the record context.
+  net_log_->ClearAllPassivelyCapturedEvents();
+}
+
+void IOThread::ClearHostCache() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+
   if (globals_->host_resolver->GetAsHostResolverImpl()) {
     net::HostCache* host_cache =
         globals_->host_resolver.get()->GetAsHostResolverImpl()->cache();
     if (host_cache)
       host_cache->clear();
   }
-  // Clear all of the passively logged data.
-  // TODO(eroman): this is a bit heavy handed, really all we need to do is
-  //               clear the data pertaining to off the record context.
-  net_log_->ClearAllPassivelyCapturedEvents();
 }