Hide MHTMLGenerationManager from chrome.

BUG=98716
Review URL: https://chromiumcodereview.appspot.com/9566001

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@124430 0039d316-1c4b-4281-b951-d872f2087c98
diff --git a/content/browser/tab_contents/tab_contents.cc b/content/browser/tab_contents/tab_contents.cc
index c760413..80dbc0e 100644
--- a/content/browser/tab_contents/tab_contents.cc
+++ b/content/browser/tab_contents/tab_contents.cc
@@ -17,6 +17,7 @@
 #include "content/browser/child_process_security_policy_impl.h"
 #include "content/browser/debugger/devtools_manager_impl.h"
 #include "content/browser/download/download_stats.h"
+#include "content/browser/download/mhtml_generation_manager.h"
 #include "content/browser/download/save_package.h"
 #include "content/browser/gpu/gpu_data_manager_impl.h"
 #include "content/browser/gpu/gpu_process_host.h"
@@ -1139,6 +1140,12 @@
   return save_package_->Init();
 }
 
+void TabContents::GenerateMHTML(
+    const FilePath& file,
+    const base::Callback<void(const FilePath&, int64)>& callback) {
+  MHTMLGenerationManager::GetInstance()->GenerateMHTML(this, file, callback);
+}
+
 bool TabContents::IsActiveEntry(int32 page_id) {
   NavigationEntryImpl* active_entry =
       NavigationEntryImpl::FromNavigationEntry(controller_.GetActiveEntry());