Helped disambiguate a misleading method name.

Bug: None
Change-Id: I765d5e3134721bd801a4dc673216e45ac938d448
Reviewed-on: https://chromium-review.googlesource.com/1009268Reviewed-by: Jia Meng <jiameng@chromium.org>
Commit-Queue: Michael Martis <martis@chromium.org>
Cr-Commit-Position: refs/heads/master@{#550120}

components/translate/content/renderer/translate_helper.cc

@@ -132,7 +132,7 @@ void TranslateHelper::PageCaptured(const base::string16& contents) {
   ResetPage();
   mojom::PagePtr page;
   binding_.Bind(mojo::MakeRequest(&page));
-  GetTranslateDriver()->RegisterPage(
+  GetTranslateHandler()->RegisterPage(
       std::move(page), details, !details.has_notranslate && !language.empty());
 }
 
@@ -441,13 +441,13 @@ void TranslateHelper::NotifyBrowserTranslationFailed(
       .Run(false, source_lang_, target_lang_, error);
 }
 
-const mojom::ContentTranslateDriverPtr& TranslateHelper::GetTranslateDriver() {
-  if (!translate_driver_) {
+const mojom::ContentTranslateDriverPtr& TranslateHelper::GetTranslateHandler() {
+  if (!translate_handler_) {
     render_frame()->GetRemoteInterfaces()->GetInterface(
-        mojo::MakeRequest(&translate_driver_));
+        mojo::MakeRequest(&translate_handler_));
   }
 
-  return translate_driver_;
+  return translate_handler_;
 }
 
 void TranslateHelper::ResetPage() {

components/translate/content/renderer/translate_helper.h

@@ -118,7 +118,7 @@ class TranslateHelper : public content::RenderFrameObserver,
   static std::string BuildTranslationScript(const std::string& source_lang,
                                             const std::string& target_lang);
 
-  const mojom::ContentTranslateDriverPtr& GetTranslateDriver();
+  const mojom::ContentTranslateDriverPtr& GetTranslateHandler();
 
   // Cleanups all states and pending callbacks associated with the current
   // running page translation.
@@ -163,7 +163,11 @@ class TranslateHelper : public content::RenderFrameObserver,
   // The URL scheme for translate extensions.
   std::string extension_scheme_;
 
-  mojom::ContentTranslateDriverPtr translate_driver_;
+  // The Mojo pipe for communication with the browser process. Due to a
+  // refactor, the other end of the pipe is now attached to a
+  // LanguageDetectionTabHelper (which implements the ContentTranslateDriver
+  // Mojo interface).
+  mojom::ContentTranslateDriverPtr translate_handler_;
 
   mojo::Binding<mojom::Page> binding_;