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

gpu/command_buffer/service/image_manager.cc

Index: gpu/command_buffer/service/image_manager.cc
diff --git a/gpu/command_buffer/service/image_manager.cc b/gpu/command_buffer/service/image_manager.cc
index a3ac4350c875fabb11f6e53375bfeef68d158e6f..c3bf760853a57a37020db8bca38249dd52fffb35 100644
--- a/gpu/command_buffer/service/image_manager.cc
+++ b/gpu/command_buffer/service/image_manager.cc
@@ -15,6 +15,13 @@ ImageManager::ImageManager() : release_after_use_(false) {
 ImageManager::~ImageManager() {
 }
 
+void ImageManager::Destroy(bool have_context) {
+  for (GLImageMap::const_iterator iter = gl_images_.begin();
+       iter != gl_images_.end();
+       ++iter)
+    iter->second.get()->Destroy(have_context);

[reveman, 2014/05/29 16:30:34]

should we drop the ref here too?

+}
+
 void ImageManager::RegisterGpuMemoryBuffer(int32 id,
                                            gfx::GpuMemoryBufferHandle buffer,
                                            size_t width,