[Translate] Migrate IPCs to Mojo interfaces.

chrome/browser/chrome_content_browser_client.cc

Index: chrome/browser/chrome_content_browser_client.cc
diff --git a/chrome/browser/chrome_content_browser_client.cc b/chrome/browser/chrome_content_browser_client.cc
index b029d3182de5c91a50a55ed80469af0e4c6c11d5..64d7132f8a1ca23fe3429b6f08e3382752e13a79 100644
--- a/chrome/browser/chrome_content_browser_client.cc
+++ b/chrome/browser/chrome_content_browser_client.cc
@@ -82,6 +82,7 @@
 #include "chrome/browser/sync_file_system/local/sync_file_system_backend.h"
 #include "chrome/browser/tab_contents/tab_util.h"
 #include "chrome/browser/tracing/chrome_tracing_delegate.h"
+#include "chrome/browser/translate/chrome_translate_client.h"
 #include "chrome/browser/ui/blocked_content/blocked_window_params.h"
 #include "chrome/browser/ui/blocked_content/popup_blocker_tab_helper.h"
 #include "chrome/browser/ui/browser_navigator.h"
@@ -2824,6 +2825,12 @@ void ChromeContentBrowserClient::RegisterRenderFrameMojoInterfaces(
       base::Bind(&autofill::ContentAutofillDriverFactory::BindAutofillDriver,
                  render_frame_host));
 
+  // Register mojo ContentTranslateDriver interface only for main frame.
+  if (!render_frame_host->GetParent()) {
+    registry->AddInterface(base::Bind(
+        &ChromeTranslateClient::BindContentTranslateDriver, render_frame_host));
+  }
+
 #if BUILDFLAG(ANDROID_JAVA_UI)
   ChromeServiceRegistrarAndroid::RegisterRenderFrameMojoInterfaces(
       registry, render_frame_host);