Update webkit/ to use scoped_refptr<T>::get() rather than implicit "operator T*"

webkit/plugins/ppapi/ppb_file_ref_impl.cc

Index: webkit/plugins/ppapi/ppb_file_ref_impl.cc
diff --git a/webkit/plugins/ppapi/ppb_file_ref_impl.cc b/webkit/plugins/ppapi/ppb_file_ref_impl.cc
index fd814f20539b2f8f4ad32e0d82144d8a5d29b6a8..2bd1eabf671789e8f6710ff2b389eeacc4b31118 100644
--- a/webkit/plugins/ppapi/ppb_file_ref_impl.cc
+++ b/webkit/plugins/ppapi/ppb_file_ref_impl.cc
@@ -123,7 +123,7 @@ void GetFileInfoCallback(
     base::PlatformFileError error_code,
     const base::PlatformFileInfo& file_info) {
   base::FileUtilProxy::Close(
-      task_runner, file, base::Bind(&IgnoreCloseCallback));
+      task_runner.get(), file, base::Bind(&IgnoreCloseCallback));
 
   if (!TrackedCallback::IsPending(callback))
     return;
@@ -156,11 +156,12 @@ void QueryCallback(scoped_refptr<base::TaskRunner> task_runner,
   base::PlatformFile file = passed_file.ReleaseValue();
 
   if (!base::FileUtilProxy::GetFileInfoFromPlatformFile(
-          task_runner, file,
-          base::Bind(&GetFileInfoCallback, task_runner, file, info,
-                     callback))) {
+          task_runner.get(),
+          file,
+          base::Bind(
+              &GetFileInfoCallback, task_runner, file, info, callback))) {
     base::FileUtilProxy::Close(
-        task_runner, file, base::Bind(&IgnoreCloseCallback));
+        task_runner.get(), file, base::Bind(&IgnoreCloseCallback));
     callback->Run(PP_ERROR_FAILED);
   }
 }
@@ -313,7 +314,7 @@ PP_Resource PPB_FileRef_Impl::GetParent() {
 
   scoped_refptr<PPB_FileRef_Impl> parent_ref(
       CreateInternal(pp_instance(), file_system_, parent_path));
-  if (!parent_ref)
+  if (!parent_ref.get())
     return 0;
   return parent_ref->GetReference();
 }
@@ -393,9 +394,9 @@ int32_t PPB_FileRef_Impl::Rename(PP_Resource new_pp_file_ref,
 PP_Var PPB_FileRef_Impl::GetAbsolutePath() {
   if (GetFileSystemType() != PP_FILESYSTEMTYPE_EXTERNAL)
     return GetPath();
-  if (!external_path_var_) {
-    external_path_var_ = new StringVar(
-        external_file_system_path_.AsUTF8Unsafe());
+  if (!external_path_var_.get()) {
+    external_path_var_ =
+        new StringVar(external_file_system_path_.AsUTF8Unsafe());
   }
   return external_path_var_->GetPPVar();
 }
@@ -461,7 +462,7 @@ int32_t PPB_FileRef_Impl::QueryInHost(
     scoped_refptr<TrackedCallback> callback) {
   scoped_refptr<PluginInstance> plugin_instance =
       ResourceHelper::GetPluginInstance(this);
-  if (!plugin_instance)
+  if (!plugin_instance.get())
     return PP_ERROR_FAILED;
 
   if (!file_system_) {