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);
+}

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

If we clear the hash map here, we would need to ensure Unregister doesnt do the
same, as Unregister will be invoked before Destroy and we would end up leaking
and having problems.

[reveman, 2014/06/02 14:34:47]

I'm not following. How can this cause a leak?

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