Unnecessary 'translate to English' option is displayed in context menu in PDF.

chrome/browser/renderer_context_menu/render_view_context_menu.cc

Index: chrome/browser/renderer_context_menu/render_view_context_menu.cc
diff --git a/chrome/browser/renderer_context_menu/render_view_context_menu.cc b/chrome/browser/renderer_context_menu/render_view_context_menu.cc
index 5a4ab40131b9e7646e31a3ba46e0a045871eb86b..6bcd32668f3ccedab7d7aa8d94ba9d5545b6baf9 100644
--- a/chrome/browser/renderer_context_menu/render_view_context_menu.cc
+++ b/chrome/browser/renderer_context_menu/render_view_context_menu.cc
@@ -1167,8 +1167,12 @@ bool RenderViewContextMenu::IsCommandIdEnabled(int id) const {
     case IDC_CONTENT_CONTEXT_TRANSLATE: {
       ChromeTranslateClient* chrome_translate_client =
           ChromeTranslateClient::FromWebContents(embedder_web_contents_);
-      if (!chrome_translate_client)
+      // If no |chrome_translate_client| attached with this webcontent or we're

[lazyboy, 2015/09/29 04:41:58]

s/webcontent/WebContents

[Deepak, 2015/09/29 07:57:23]

Done.

+      // viewing in a MimeHandlerViewGuest translate will be disabled.
+      if (!chrome_translate_client ||
+          guest_view::GuestViewBase::IsGuest(source_web_contents_)) {

[lazyboy, 2015/09/29 04:41:58]

GuestViewBase seems too broad, to narrow it to mime handler views only, you'd
need !!MimeHandlerViewGuest::FromWebContents(..)

[Deepak, 2015/09/29 07:57:23]

Done.

         return false;
+      }
       std::string original_lang =
           chrome_translate_client->GetLanguageState().original_language();
       std::string target_lang = g_browser_process->GetApplicationLocale();