[Translate] Migrate IPCs to Mojo interfaces.

chrome/browser/translate/chrome_translate_client.cc

 // Copyright 2014 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.
 
 #include "chrome/browser/translate/chrome_translate_client.h"
 
 #include <vector>
 
 #include "base/logging.h"
 #include "base/path_service.h"
 #include "base/strings/string_split.h"
 #include "build/build_config.h"
 #include "chrome/browser/browser_process.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/infobars/infobar_service.h"
 #include "chrome/browser/profiles/profile.h"
 #include "chrome/browser/translate/translate_accept_languages_factory.h"
 #include "chrome/browser/translate/translate_service.h"
 #include "chrome/browser/ui/browser.h"
 #include "chrome/browser/ui/browser_finder.h"
 #include "chrome/browser/ui/browser_tabstrip.h"
 #include "chrome/browser/ui/browser_window.h"
 #include "chrome/browser/ui/tabs/tab_strip_model.h"
 #include "chrome/browser/ui/translate/translate_bubble_factory.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/pref_names.h"
 #include "components/prefs/pref_service.h"
-#include "components/translate/content/common/translate_messages.h"
 #include "components/translate/core/browser/language_state.h"
 #include "components/translate/core/browser/page_translated_details.h"
 #include "components/translate/core/browser/translate_accept_languages.h"
 #include "components/translate/core/browser/translate_download_manager.h"
 #include "components/translate/core/browser/translate_infobar_delegate.h"
 #include "components/translate/core/browser/translate_manager.h"
 #include "components/translate/core/browser/translate_prefs.h"
 #include "components/translate/core/common/language_detection_details.h"
 #include "components/variations/service/variations_service.h"
 #include "content/public/browser/notification_service.h"
@@ skipping 92 matching lines @@
     if (!auto_translate_language.empty()) {
       *target = auto_translate_language;
       return;
     }
   }
 
   *target =
       translate::TranslateManager::GetTargetLanguage(translate_prefs.get());
 }
 
+// static
+void ChromeTranslateClient::BindContentTranslateDriver(
+    content::RenderFrameHost* render_frame_host,
+    translate::mojom::ContentTranslateDriverRequest request) {
+  content::WebContents* web_contents =
+      content::WebContents::FromRenderFrameHost(render_frame_host);
+  if (!web_contents)
+    return;
+
+  ChromeTranslateClient* instance =
+      ChromeTranslateClient::FromWebContents(web_contents);
+  // We try to bind to the driver, but if driver is not ready for now or totally
+  // not available for this render frame host, the request will be just dropped,
+  // this would cause closing the message pipe which would raise connection

[Anand Mistry (off Chromium), 2016/07/20 13:06:33]

nit: Make "this would cause..." a new sentence.

Also, I think this would be better worded as:
This would cause the message pipe to be closed, which will raise a connection
error on the peer side.

[leonhsl(Using Gerrit), 2016/07/29 12:54:31]

Done.

+  // error to peer side.
+  if (!instance)
+    return;
+
+  instance->translate_driver().BindRequest(std::move(request));
+}
+
 translate::TranslateManager* ChromeTranslateClient::GetTranslateManager() {
   return translate_manager_.get();
 }
 
 void ChromeTranslateClient::ShowTranslateUI(
     translate::TranslateStep step,
     const std::string& source_language,
     const std::string& target_language,
     translate::TranslateErrors::Type error_type,
     bool triggered_from_menu) {
@@ skipping 155 matching lines @@
     if (GetLanguageState().InTranslateNavigation())
       return;
   }
 
   TranslateBubbleFactory::Show(browser->window(), web_contents(), step,
                                error_type);
 #else
   NOTREACHED();
 #endif
 }