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

ui/gl/gl_image_shm.cc

Index: ui/gl/gl_image_shm.cc
diff --git a/ui/gl/gl_image_shm.cc b/ui/gl/gl_image_shm.cc
index 75ef453eade794fe846ed1548dbe90d7e56f6f3f..b910487eca13fa1b40ae96cd4861ef1b3c96749b 100644
--- a/ui/gl/gl_image_shm.cc
+++ b/ui/gl/gl_image_shm.cc
@@ -79,7 +79,14 @@ GLImageShm::GLImageShm(gfx::Size size, unsigned internalformat)
 {
 }
 
-GLImageShm::~GLImageShm() { Destroy(); }
+GLImageShm::~GLImageShm() {
+  DCHECK(!shared_memory_);
+#if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || \
+    defined(USE_OZONE)
+  DCHECK_EQ(EGL_NO_IMAGE_KHR, egl_image_);
+  DCHECK_EQ(0u, egl_texture_id_);
+#endif
+}
 
 bool GLImageShm::Initialize(gfx::GpuMemoryBufferHandle buffer) {
   if (!ValidFormat(internalformat_)) {
@@ -105,7 +112,8 @@ bool GLImageShm::Initialize(gfx::GpuMemoryBufferHandle buffer) {
   return true;
 }
 
-void GLImageShm::Destroy() {
+void GLImageShm::Destroy(bool have_context) {
+  shared_memory_.reset();
 #if defined(OS_WIN) || defined(USE_X11) || defined(OS_ANDROID) || \
     defined(USE_OZONE)
   if (egl_image_ != EGL_NO_IMAGE_KHR) {
@@ -114,7 +122,8 @@ void GLImageShm::Destroy() {
   }
 
   if (egl_texture_id_) {
-    glDeleteTextures(1, &egl_texture_id_);
+    if (have_context)
+      glDeleteTextures(1, &egl_texture_id_);
     egl_texture_id_ = 0u;
   }
 #endif