[Translate] Migrate IPCs to Mojo interfaces.

chrome/browser/translate/chrome_translate_client.cc

Index: chrome/browser/translate/chrome_translate_client.cc
diff --git a/chrome/browser/translate/chrome_translate_client.cc b/chrome/browser/translate/chrome_translate_client.cc
index 6bf702d1fce2d69070b1485488969f93add3ee60..657510ea62dd421ef4bb88c2ef7f44011ffefdb9 100644
--- a/chrome/browser/translate/chrome_translate_client.cc
+++ b/chrome/browser/translate/chrome_translate_client.cc
@@ -25,7 +25,6 @@
 #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"
@@ -138,6 +137,27 @@ void ChromeTranslateClient::GetTranslateLanguages(
       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();
 }