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

ui/gl/gl_image_android_native_buffer.cc

Index: ui/gl/gl_image_android_native_buffer.cc
diff --git a/ui/gl/gl_image_android_native_buffer.cc b/ui/gl/gl_image_android_native_buffer.cc
index 6d11497b2a31ccd36bef9b7231917b194b89438d..3cffcc4a4e0cd8cab12627ffb13708735d65c670 100644
--- a/ui/gl/gl_image_android_native_buffer.cc
+++ b/ui/gl/gl_image_android_native_buffer.cc
@@ -17,7 +17,10 @@ GLImageAndroidNativeBuffer::GLImageAndroidNativeBuffer(gfx::Size size)
       egl_image_for_unbind_(EGL_NO_IMAGE_KHR),
       texture_id_for_unbind_(0) {}
 
-GLImageAndroidNativeBuffer::~GLImageAndroidNativeBuffer() { Destroy(); }
+GLImageAndroidNativeBuffer::~GLImageAndroidNativeBuffer() {
+  DCHECK_EQ(EGL_NO_IMAGE_KHR, egl_image_);
+  DCHECK_EQ(0u, texture_id_for_unbind_);
+}
 
 bool GLImageAndroidNativeBuffer::Initialize(gfx::GpuMemoryBufferHandle buffer) {
   DCHECK(buffer.native_buffer);
@@ -27,18 +30,20 @@ bool GLImageAndroidNativeBuffer::Initialize(gfx::GpuMemoryBufferHandle buffer) {
       EGL_NATIVE_BUFFER_ANDROID, buffer.native_buffer, attrs);
 }
 
-void GLImageAndroidNativeBuffer::Destroy() {
+void GLImageAndroidNativeBuffer::Destroy(bool have_context) {
   if (egl_image_for_unbind_ != EGL_NO_IMAGE_KHR) {
     eglDestroyImageKHR(GLSurfaceEGL::GetHardwareDisplay(),
                        egl_image_for_unbind_);
     egl_image_for_unbind_ = EGL_NO_IMAGE_KHR;
   }
+
   if (texture_id_for_unbind_) {
-    glDeleteTextures(1, &texture_id_for_unbind_);
-    texture_id_for_unbind_ = 0;
+    texture_id_for_unbind_ = 0u;
+    if (have_context)
+      glDeleteTextures(1, &texture_id_for_unbind_);

[reveman, 2014/05/31 05:05:06]

doesn't work as you set texture_id_for_unbind_ to 0 above

[sohanjg, 2014/06/02 13:59:42]

Done.

   }
 
-  GLImageEGL::Destroy();
+  GLImageEGL::Destroy(have_context);
 }
 
 bool GLImageAndroidNativeBuffer::BindTexImage(unsigned target) {