Privatize StrongBinding lifetime management

components/filesystem/directory_impl.h

Index: components/filesystem/directory_impl.h
diff --git a/components/filesystem/directory_impl.h b/components/filesystem/directory_impl.h
index 5b2ed5eb021ebc26abc2641f785106b04a52d26c..8d874432d4a6e31f0ec2232c60cc74dc926f1245 100644
--- a/components/filesystem/directory_impl.h
+++ b/components/filesystem/directory_impl.h
@@ -15,7 +15,6 @@
 #include "components/filesystem/public/interfaces/directory.mojom.h"
 #include "components/filesystem/shared_temp_dir.h"
 #include "mojo/public/cpp/bindings/interface_request.h"
-#include "mojo/public/cpp/bindings/strong_binding.h"
 
 namespace filesystem {
 
@@ -25,20 +24,15 @@ class DirectoryImpl : public mojom::Directory {
  public:
   // Set |temp_dir| only if there's a temporary directory that should be deleted
   // when this object is destroyed.
-  DirectoryImpl(mojo::InterfaceRequest<mojom::Directory> request,
-                base::FilePath directory_path,
+  DirectoryImpl(base::FilePath directory_path,
                 scoped_refptr<SharedTempDir> temp_dir,
                 scoped_refptr<LockTable> lock_table);
   ~DirectoryImpl() override;
 
-  void set_connection_error_handler(const base::Closure& error_handler) {
-    binding_.set_connection_error_handler(error_handler);
-  }
-
   // |Directory| implementation:
   void Read(const ReadCallback& callback) override;
   void OpenFile(const mojo::String& path,
-                mojo::InterfaceRequest<mojom::File> file,
+                mojom::FileRequest file,
                 uint32_t open_flags,
                 const OpenFileCallback& callback) override;
   void OpenFileHandle(const mojo::String& path,
@@ -47,7 +41,7 @@ class DirectoryImpl : public mojom::Directory {
   void OpenFileHandles(mojo::Array<mojom::FileOpenDetailsPtr> details,
                        const OpenFileHandlesCallback& callback) override;
   void OpenDirectory(const mojo::String& path,
-                     mojo::InterfaceRequest<mojom::Directory> directory,
+                     mojom::DirectoryRequest directory,
                      uint32_t open_flags,
                      const OpenDirectoryCallback& callback) override;
   void Rename(const mojo::String& path,
@@ -63,7 +57,7 @@ class DirectoryImpl : public mojom::Directory {
   void Flush(const FlushCallback& callback) override;
   void StatFile(const mojo::String& path,
                 const StatFileCallback& callback) override;
-  void Clone(mojo::InterfaceRequest<mojom::Directory> directory) override;
+  void Clone(mojom::DirectoryRequest directory) override;
   void ReadEntireFile(const mojo::String& path,
                       const ReadEntireFileCallback& callback) override;
   void WriteFile(const mojo::String& path,
@@ -75,7 +69,6 @@ class DirectoryImpl : public mojom::Directory {
                                         uint32_t open_flags,
                                         mojom::FileError* error);
 
-  mojo::StrongBinding<mojom::Directory> binding_;
   base::FilePath directory_path_;
   scoped_refptr<SharedTempDir> temp_dir_;
   scoped_refptr<LockTable> lock_table_;