Revert 35735 - Relanding the language detection code....

chrome/browser/renderer_host/render_view_host.cc

Index: chrome/browser/renderer_host/render_view_host.cc
===================================================================
--- chrome/browser/renderer_host/render_view_host.cc	(revision 35751)
+++ chrome/browser/renderer_host/render_view_host.cc	(working copy)
@@ -46,6 +46,8 @@
 #if defined(OS_WIN)
 // TODO(port): accessibility not yet implemented. See http://crbug.com/8288.
 #include "chrome/browser/browser_accessibility_manager.h"
+// TODO(port): The compact language detection library works only for Windows.
+#include "third_party/cld/bar/toolbar/cld/i18n/encodings/compact_lang_det/win/cld_unicodetext.h"
 #endif
 
 using base::TimeDelta;
@@ -421,6 +423,10 @@
   Send(new ViewMsg_StopFinding(routing_id(), clear_selection));
 }
 
+void RenderViewHost::GetPageLanguage() {
+  Send(new ViewMsg_DeterminePageText(routing_id()));
+}
+
 void RenderViewHost::Zoom(PageZoom::Function function) {
   Send(new ViewMsg_Zoom(routing_id(), function));
 }
@@ -753,6 +759,8 @@
     IPC_MESSAGE_HANDLER(ViewHostMsg_DidFailProvisionalLoadWithError,
                         OnMsgDidFailProvisionalLoadWithError)
     IPC_MESSAGE_HANDLER(ViewHostMsg_Find_Reply, OnMsgFindReply)
+    IPC_MESSAGE_HANDLER(ViewMsg_DeterminePageText_Reply,
+                        OnDeterminePageTextReply)
     IPC_MESSAGE_HANDLER(ViewMsg_ExecuteCodeFinished,
                         OnExecuteCodeFinished)
     IPC_MESSAGE_HANDLER(ViewHostMsg_UpdateFavIconURL, OnMsgUpdateFavIconURL)
@@ -836,7 +844,6 @@
     IPC_MESSAGE_HANDLER(ViewHostMsg_AccessibilityFocusChange,
                         OnAccessibilityFocusChange)
     IPC_MESSAGE_HANDLER(ViewHostMsg_OnCSSInserted, OnCSSInserted)
-    IPC_MESSAGE_HANDLER(ViewHostMsg_PageContents, OnPageContents)
     // Have the super handle all other messages.
     IPC_MESSAGE_UNHANDLED(RenderWidgetHost::OnMessageReceived(msg))
   IPC_END_MESSAGE_MAP_EX()
@@ -1140,6 +1147,22 @@
   Send(new ViewMsg_FindReplyACK(routing_id()));
 }
 
+void RenderViewHost::OnDeterminePageTextReply(
+    const std::wstring& page_text) {
+#if defined(OS_WIN)  // Only for windows.
+    int num_languages = 0;
+    bool is_reliable = false;
+    const char* language_iso_code = LanguageCodeISO639_1(
+        DetectLanguageOfUnicodeText(NULL, page_text.c_str(), true, &is_reliable,
+                                    &num_languages, NULL));
+    std::string language(language_iso_code);
+    NotificationService::current()->Notify(
+        NotificationType::TAB_LANGUAGE_DETERMINED,
+        Source<RenderViewHost>(this),
+        Details<std::string>(&language));
+#endif
+}
+
 void RenderViewHost::OnExecuteCodeFinished(int request_id, bool success) {
   std::pair<int, bool> result_details(request_id, success);
   NotificationService::current()->Notify(
@@ -1760,13 +1783,3 @@
 void RenderViewHost::OnCSSInserted() {
   delegate_->DidInsertCSS();
 }
-
-void RenderViewHost::OnPageContents(const GURL& url,
-                                    int32 page_id,
-                                    const std::wstring& contents) {
-  RenderViewHostDelegate::BrowserIntegration* integration_delegate =
-      delegate_->GetBrowserIntegrationDelegate();
-  if (!integration_delegate)
-    return;
-  integration_delegate->OnPageContents(url, process()->id(), page_id, contents);
-}