Expose distiller functions to JavaScript

chrome/renderer/chrome_content_renderer_client.cc

Index: chrome/renderer/chrome_content_renderer_client.cc
diff --git a/chrome/renderer/chrome_content_renderer_client.cc b/chrome/renderer/chrome_content_renderer_client.cc
index c8f067efd268c4e3c368302aa7b01ab0127536f8..ce2c34a62361966d1f8e2424bafc15140ff0f970 100644
--- a/chrome/renderer/chrome_content_renderer_client.cc
+++ b/chrome/renderer/chrome_content_renderer_client.cc
@@ -15,6 +15,7 @@
 #include "base/strings/utf_string_conversions.h"
 #include "base/values.h"
 #include "chrome/common/channel_info.h"
+#include "chrome/common/chrome_isolated_world_ids.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/crash_keys.h"
@@ -60,6 +61,7 @@
 #include "components/autofill/content/renderer/password_generation_agent.h"
 #include "components/content_settings/core/common/content_settings_pattern.h"
 #include "components/data_reduction_proxy/core/common/data_reduction_proxy_headers.h"
+#include "components/dom_distiller/content/renderer/distiller_js_render_frame_observer.h"
 #include "components/dom_distiller/core/url_constants.h"
 #include "components/nacl/renderer/ppb_nacl_private.h"
 #include "components/nacl/renderer/ppb_nacl_private_impl.h"
@@ -559,6 +561,10 @@ void ChromeContentRendererClient::RenderFrameCreated(
     new NetErrorHelper(render_frame);
   }
 
+  // Set up a mojo service to test if this page is a distiller page.
+  new dom_distiller::DistillerJsRenderFrameObserver(
+      render_frame, chrome::ISOLATED_WORLD_ID_CHROME_INTERNAL);
+
   PasswordAutofillAgent* password_autofill_agent =
       new PasswordAutofillAgent(render_frame);
   PasswordGenerationAgent* password_generation_agent =