Update go dependencies

vendor/google.golang.org/appengine/appengine.go

@@ -78,6 +78,12 @@ func IsAppEngine() bool {
 	return internal.IsAppEngine()
 }
 
+// IsSecondGen reports whether the App Engine app is running on the second generation
+// runtimes (>= Go 1.11).
+func IsSecondGen() bool {
+	return internal.IsSecondGen()
+}
+
 // NewContext returns a context for an in-flight HTTP request.
 // This function is cheap.
 func NewContext(req *http.Request) context.Context {
@@ -91,8 +97,6 @@ func WithContext(parent context.Context, req *http.Request) context.Context {
 	return internal.WithContext(parent, req)
 }
 
-// TODO(dsymonds): Add a Call function here? Otherwise other packages can't access internal.Call.
-
 // BlobKey is a key for a blobstore blob.
 //
 // Conceptually, this type belongs in the blobstore package, but it lives in

vendor/google.golang.org/appengine/internal/api.go

@@ -44,6 +44,7 @@ var (
 	curNamespaceHeader = http.CanonicalHeaderKey("X-AppEngine-Current-Namespace")
 	userIPHeader       = http.CanonicalHeaderKey("X-AppEngine-User-IP")
 	remoteAddrHeader   = http.CanonicalHeaderKey("X-AppEngine-Remote-Addr")
+	devRequestIdHeader = http.CanonicalHeaderKey("X-Appengine-Dev-Request-Id")
 
 	// Outgoing headers.
 	apiEndpointHeader      = http.CanonicalHeaderKey("X-Google-RPC-Service-Endpoint")
@@ -494,6 +495,9 @@ func Call(ctx netcontext.Context, service, method string, in, out proto.Message)
 	if ticket == "" {
 		ticket = DefaultTicket()
 	}
+	if dri := c.req.Header.Get(devRequestIdHeader); IsDevAppServer() && dri != "" {
+		ticket = dri
+	}
 	req := &remotepb.Request{
 		ServiceName: &service,
 		Method:      &method,
@@ -579,7 +583,10 @@ func logf(c *context, level int64, format string, args ...interface{}) {
 		Level:         &level,
 		Message:       &s,
 	})
-	log.Print(logLevelName[level] + ": " + s)
+	// Only duplicate log to stderr if not running on App Engine second generation
+	if !IsSecondGen() {
+		log.Print(logLevelName[level] + ": " + s)
+	}
 }
 
 // flushLog attempts to flush any pending logs to the appserver.

vendor/google.golang.org/appengine/internal/identity.go

@@ -31,9 +31,15 @@ func AppID(c netcontext.Context) string {
 // ../appengine.go. See that file for commentary.
 func IsStandard() bool {
 	// appengineStandard will be true for first-gen runtimes (<= Go 1.9) but not
-	// second-gen (>= Go 1.11). Second-gen runtimes set $GAE_ENV so we use that
-	// to check if we're on a second-gen runtime.
-	return appengineStandard || os.Getenv("GAE_ENV") == "standard"
+	// second-gen (>= Go 1.11).
+	return appengineStandard || IsSecondGen()
+}
+
+// IsStandard is the implementation of the wrapper function of the same name in
+// ../appengine.go. See that file for commentary.
+func IsSecondGen() bool {
+	// Second-gen runtimes set $GAE_ENV so we use that to check if we're on a second-gen runtime.
+	return os.Getenv("GAE_ENV") == "standard"
 }
 
 // IsFlex is the implementation of the wrapper function of the same name in

vendor/google.golang.org/appengine/internal/main.go

@@ -11,5 +11,6 @@ import (
 )
 
 func Main() {
+	MainPath = ""
 	appengine_internal.Main()
 }

vendor/google.golang.org/appengine/internal/main_common.go

@@ -0,0 +1,7 @@
+package internal
+
+// MainPath stores the file path of the main package. On App Engine Standard
+// using Go version 1.9 and below, this will be unset. On App Engine Flex and
+// App Engine Standard second-gen (Go 1.11 and above), this will be the
+// filepath to package main.
+var MainPath string

vendor/google.golang.org/appengine/internal/main_vm.go

@@ -12,9 +12,12 @@ import (
 	"net/http"
 	"net/url"
 	"os"
+	"path/filepath"
+	"runtime"
 )
 
 func Main() {
+	MainPath = filepath.Dir(findMainPath())
 	installHealthChecker(http.DefaultServeMux)
 
 	port := "8080"
@@ -31,6 +34,24 @@ func Main() {
 	}
 }
 
+// Find the path to package main by looking at the root Caller.
+func findMainPath() string {
+	pc := make([]uintptr, 100)
+	n := runtime.Callers(2, pc)
+	frames := runtime.CallersFrames(pc[:n])
+	for {
+		frame, more := frames.Next()
+		// Tests won't have package main, instead they have testing.tRunner
+		if frame.Function == "main.main" || frame.Function == "testing.tRunner" {
+			return frame.File
+		}
+		if !more {
+			break
+		}
+	}
+	return ""
+}
+
 func installHealthChecker(mux *http.ServeMux) {
 	// If no health check handler has been installed by this point, add a trivial one.
 	const healthPath = "/_ah/health"