[WIP] Mojo native bindings interface.

chrome/browser/pdf/pdf_extension_test.cc

Index: chrome/browser/pdf/pdf_extension_test.cc
diff --git a/chrome/browser/pdf/pdf_extension_test.cc b/chrome/browser/pdf/pdf_extension_test.cc
index b0a6220103f7159a69ca92a72a64fec795704aa1..db27459d6ec3f63a093f7a6caa946219b0b609ac 100644
--- a/chrome/browser/pdf/pdf_extension_test.cc
+++ b/chrome/browser/pdf/pdf_extension_test.cc
@@ -47,6 +47,7 @@
 #include "content/public/browser/render_view_host.h"
 #include "content/public/browser/render_widget_host.h"
 #include "content/public/browser/web_contents.h"
+#include "content/public/common/content_switches.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/test_navigation_observer.h"
 #include "extensions/browser/extension_registry.h"
@@ -92,6 +93,7 @@ class PDFExtensionTest : public ExtensionApiTest,
 
   void SetUpCommandLine(base::CommandLine* command_line) override {
     content::IsolateAllSitesForTesting(command_line);
+    command_line->AppendSwitchASCII(switches::kEnableBlinkFeatures, "MojoJS");
   }
 
   void SetUpOnMainThread() override {