Remove HTTP cache Record/Playback support

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index 3daf11327c4033207c387c59ca2667e16e6613e1..94888c2d4da8482c1ec36381e700646b60fed376 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -38,7 +38,6 @@
 #include "chrome/renderer/net_benchmarking_extension.h"
 #include "chrome/renderer/page_load_histograms.h"
 #include "chrome/renderer/pepper/pepper_helper.h"
-#include "chrome/renderer/playback_extension.h"
 #include "chrome/renderer/plugins/chrome_plugin_placeholder.h"
 #include "chrome/renderer/plugins/plugin_preroller.h"
 #include "chrome/renderer/plugins/plugin_uma.h"
@@ -431,11 +430,6 @@ void ChromeContentRendererClient::RenderThreadStarted() {
   if (command_line->HasSwitch(switches::kInstantProcess))
     thread->RegisterExtension(extensions_v8::SearchBoxExtension::Get());
 
-  if (command_line->HasSwitch(switches::kPlaybackMode) ||
-      command_line->HasSwitch(switches::kRecordMode)) {
-    thread->RegisterExtension(extensions_v8::PlaybackExtension::Get());
-  }
-
   // chrome:, chrome-search:, chrome-devtools:, and chrome-distiller: pages
   // should not be accessible by normal content, and should also be unable to
   // script anything but themselves (to help limit the damage that a corrupt