During image destroy, delete textures only if we have a GL context.

ui/gl/gl_image_io_surface.cc

Index: ui/gl/gl_image_io_surface.cc
diff --git a/ui/gl/gl_image_io_surface.cc b/ui/gl/gl_image_io_surface.cc
index cf858abbf6d3ee5ff02532e9789e37338614f950..eb78ce9ab0be950116aadb9a5cc68b708e6affce 100644
--- a/ui/gl/gl_image_io_surface.cc
+++ b/ui/gl/gl_image_io_surface.cc
@@ -15,7 +15,9 @@ namespace gfx {
 GLImageIOSurface::GLImageIOSurface(const gfx::Size& size) : size_(size) {
 }
 
-GLImageIOSurface::~GLImageIOSurface() { Destroy(); }
+GLImageIOSurface::~GLImageIOSurface() {
+  DCHECK(!io_surface_);
+}
 
 bool GLImageIOSurface::Initialize(const gfx::GpuMemoryBufferHandle& handle) {
   io_surface_.reset(IOSurfaceLookup(handle.io_surface_id));
@@ -27,6 +29,10 @@ bool GLImageIOSurface::Initialize(const gfx::GpuMemoryBufferHandle& handle) {
   return true;
 }
 
+void GLImageIOSurface::Destroy(bool have_context) {
+  io_surface_.reset();
+}
+
 gfx::Size GLImageIOSurface::GetSize() { return size_; }
 
 bool GLImageIOSurface::BindTexImage(unsigned target) {