Relanding the language detection.

chrome/browser/renderer_host/browser_render_process_host.cc

 // Copyright (c) 2009 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.
 
 // Represents the browser side of the browser <--> renderer communication
 // channel. There will be one RenderProcessHost per renderer process.
 
 #include "chrome/browser/renderer_host/browser_render_process_host.h"
 
 #include <algorithm>
@@ skipping 717 matching lines @@
     queued_messages_.push(msg);
     return true;
   }
 
   return channel_->Send(msg);
 }
 
 void BrowserRenderProcessHost::OnMessageReceived(const IPC::Message& msg) {
   mark_child_process_activity_time();
   if (msg.routing_id() == MSG_ROUTING_CONTROL) {
-    // dispatch control messages
+    // Dispatch control messages.
     bool msg_is_ok = true;
     IPC_BEGIN_MESSAGE_MAP_EX(BrowserRenderProcessHost, msg, msg_is_ok)
-      IPC_MESSAGE_HANDLER(ViewHostMsg_PageContents, OnPageContents)
       IPC_MESSAGE_HANDLER(ViewHostMsg_UpdatedCacheStats,
                           OnUpdatedCacheStats)
       IPC_MESSAGE_HANDLER(ViewHostMsg_SuddenTerminationChanged,
                           SuddenTerminationChanged);
       IPC_MESSAGE_HANDLER(ViewHostMsg_ExtensionAddListener,
                           OnExtensionAddListener)
       IPC_MESSAGE_HANDLER(ViewHostMsg_ExtensionRemoveListener,
                           OnExtensionRemoveListener)
       IPC_MESSAGE_HANDLER(ViewHostMsg_ExtensionCloseChannel,
                           OnExtensionCloseChannel)
       IPC_MESSAGE_HANDLER(ViewHostMsg_SpellChecker_RequestDictionary,
                           OnSpellCheckerRequestDictionary)
       IPC_MESSAGE_UNHANDLED_ERROR()
     IPC_END_MESSAGE_MAP_EX()
 
     if (!msg_is_ok) {
       // The message had a handler, but its de-serialization failed.
       // We consider this a capital crime. Kill the renderer if we have one.
       ReceivedBadMessage(msg.type());
     }
     return;
   }
 
-  // dispatch incoming messages to the appropriate TabContents
+  // Dispatch incoming messages to the appropriate TabContents.
   IPC::Channel::Listener* listener = GetListenerByID(msg.routing_id());
   if (!listener) {
     if (msg.is_sync()) {
       // The listener has gone away, so we must respond or else the caller will
       // hang waiting for a reply.
       IPC::Message* reply = IPC::SyncMessage::GenerateReply(&msg);
       reply->set_reply_error();
       Send(reply);
     }
     return;
@@ skipping 53 matching lines @@
         ViewHostMsg_RenderViewGone(iter.GetCurrentKey()));
     iter.Advance();
   }
 
   ClearTransportDIBCache();
 
   // this object is not deleted at this point and may be reused later.
   // TODO(darin): clean this up
 }
 
-void BrowserRenderProcessHost::OnPageContents(const GURL& url,
-                                              int32 page_id,
-                                              const std::wstring& contents) {
-  Profile* p = profile();
-  if (!p || p->IsOffTheRecord())
-    return;
-
-  HistoryService* hs = p->GetHistoryService(Profile::IMPLICIT_ACCESS);
-  if (hs)
-    hs->SetPageContents(url, contents);
-}
-
 void BrowserRenderProcessHost::OnUpdatedCacheStats(
     const WebCache::UsageStats& stats) {
   WebCacheManager::GetInstance()->ObserveStats(id(), stats);
 }
 
 void BrowserRenderProcessHost::SuddenTerminationChanged(bool enabled) {
   set_sudden_termination_allowed(enabled);
 }
 
 void BrowserRenderProcessHost::SetBackgrounded(bool backgrounded) {
@@ skipping 137 matching lines @@
         IPC::InvalidPlatformFileForTransit(),
         std::vector<std::string>(),
         std::string(),
         false));
   }
 }
 
 void BrowserRenderProcessHost::EnableAutoSpellCorrect(bool enable) {
   Send(new ViewMsg_SpellChecker_EnableAutoSpellCorrect(enable));
 }