Fix crash when using surfaceless EGL on Android

android_webview/browser/aw_gl_surface.cc

Index: android_webview/browser/aw_gl_surface.cc
diff --git a/android_webview/browser/aw_gl_surface.cc b/android_webview/browser/aw_gl_surface.cc
index 5ff927284ddeae906eb2eec6f5c329c232657298..41e230c31b32d62065ffe351577388bfeb5e196f 100644
--- a/android_webview/browser/aw_gl_surface.cc
+++ b/android_webview/browser/aw_gl_surface.cc
@@ -33,6 +33,10 @@ void* AwGLSurface::GetHandle() {
   return NULL;
 }
 
+bool AwGLSurface::RepresentsNonOwnedSurface() {
+  return true;
+}
+
 void* AwGLSurface::GetDisplay() {
   return NULL;
 }