Privatize StrongBinding lifetime management

components/dom_distiller/content/browser/distillability_driver.cc

Index: components/dom_distiller/content/browser/distillability_driver.cc
diff --git a/components/dom_distiller/content/browser/distillability_driver.cc b/components/dom_distiller/content/browser/distillability_driver.cc
index f2275b34a9bf6d9c248c6ba5142488532f56793a..d87d36d0b6590f34c5418a37470f17e7ad75f291 100644
--- a/components/dom_distiller/content/browser/distillability_driver.cc
+++ b/components/dom_distiller/content/browser/distillability_driver.cc
@@ -8,6 +8,7 @@
 #include "content/public/browser/web_contents.h"
 #include "content/public/browser/web_contents_observer.h"
 #include "content/public/browser/web_contents_user_data.h"
+#include "mojo/public/cpp/bindings/strong_binding.h"
 #include "services/shell/public/cpp/interface_registry.h"
 
 DEFINE_WEB_CONTENTS_USER_DATA_KEY(
@@ -19,11 +20,9 @@ namespace dom_distiller {
 // renderer to notify the browser that a page is distillable.
 class DistillabilityServiceImpl : public mojom::DistillabilityService {
  public:
-  DistillabilityServiceImpl(
-      mojo::InterfaceRequest<mojom::DistillabilityService> request,
+  explicit DistillabilityServiceImpl(
       base::WeakPtr<DistillabilityDriver> distillability_driver)
-      : binding_(this, std::move(request)),
-        distillability_driver_(distillability_driver) {}
+      : distillability_driver_(distillability_driver) {}
 
   ~DistillabilityServiceImpl() override {
     if (!distillability_driver_) return;
@@ -36,7 +35,6 @@ class DistillabilityServiceImpl : public mojom::DistillabilityService {
   }
 
  private:
-  mojo::StrongBinding<mojom::DistillabilityService> binding_;
   base::WeakPtr<DistillabilityDriver> distillability_driver_;
 };
 
@@ -55,7 +53,9 @@ DistillabilityDriver::~DistillabilityDriver() {
 
 void DistillabilityDriver::CreateDistillabilityService(
     mojo::InterfaceRequest<mojom::DistillabilityService> request) {
-  new DistillabilityServiceImpl(std::move(request), weak_factory_.GetWeakPtr());
+  mojo::MakeStrongBinding(
+      base::MakeUnique<DistillabilityServiceImpl>(weak_factory_.GetWeakPtr()),
+      std::move(request));
 }
 
 void DistillabilityDriver::SetDelegate(