When user "discards history," discard speculative data as well

The speculative system record the first 10 connections
that are made (at startup), and also learns about 
subresource connections made when the user visits 
sites.  This information implies visitation history,
and needs to be discarded when the user 


BUG=62891
r=eroman,sky
Review URL: http://codereview.chromium.org/6538007

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@75525 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 11 insertions, 0 deletions

diff --git a/chrome/browser/io_thread.cc b/chrome/browser/io_thread.cc
index 16eec12..2a854b8 100644
--- a/chrome/browser/io_thread.cc
+++ b/chrome/browser/io_thread.cc
@@ -15,6 +15,7 @@
 #include "base/string_split.h"
 #include "base/string_util.h"
 #include "base/threading/thread_restrictions.h"
+#include "chrome/browser/browser_process.h"
 #include "chrome/browser/browser_thread.h"
 #include "chrome/browser/gpu_process_host.h"
 #include "chrome/browser/in_process_webkit/indexed_db_key_utility_client.h"
@@ -295,6 +296,15 @@ void IOThread::ChangedToOnTheRecord() {
           &IOThread::ChangedToOnTheRecordOnIOThread));
 }
 
+void IOThread::ClearNetworkingHistory() {
+  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
+  ClearHostCache();
+  // Discard acrued data used to speculate in the future.
+  chrome_browser_net::DiscardInitialNavigationHistory();
+  if (predictor_)
+    predictor_->DiscardAllResults();
+}
+
 void IOThread::Init() {
   // Though this thread is called the "IO" thread, it actually just routes
   // messages around; it shouldn't be allowed to perform any blocking disk I/O.
@@ -496,6 +506,7 @@ void IOThread::ChangedToOnTheRecordOnIOThread() {
 
   if (predictor_) {
     // Destroy all evidence of our OTR session.
+    // Note: OTR mode never saves InitialNavigationHistory data.
     predictor_->Predictor::DiscardAllResults();
   }