exo: Recreate Surface resources on context lost.

components/exo/buffer_unittest.cc

 // Copyright 2015 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <GLES2/gl2extchromium.h>
 
 #include "base/bind.h"
 #include "cc/output/context_provider.h"
 #include "cc/resources/single_release_callback.h"
 #include "components/exo/buffer.h"
@@ skipping 19 matching lines @@
 TEST_F(BufferTest, ReleaseCallback) {
   gfx::Size buffer_size(256, 256);
   std::unique_ptr<Buffer> buffer(
       new Buffer(exo_test_helper()->CreateGpuMemoryBuffer(buffer_size)));
 
   // Set the release callback.
   int release_call_count = 0;
   buffer->set_release_callback(
       base::Bind(&Release, base::Unretained(&release_call_count)));
 
+  buffer->OnAttach();
   // Produce a texture mailbox for the contents of the buffer.
   cc::TextureMailbox texture_mailbox;
   std::unique_ptr<cc::SingleReleaseCallback> buffer_release_callback =
       buffer->ProduceTextureMailbox(&texture_mailbox, false, true);
   ASSERT_TRUE(buffer_release_callback);
 
   // Release buffer.
   buffer_release_callback->Run(gpu::SyncToken(), false);
 
+  ASSERT_EQ(release_call_count, 0);
+
+  buffer->OnDetach();
+
   // Release() should have been called exactly once.
   ASSERT_EQ(release_call_count, 1);
 }
 
 TEST_F(BufferTest, IsLost) {
   gfx::Size buffer_size(256, 256);
   std::unique_ptr<Buffer> buffer(
       new Buffer(exo_test_helper()->CreateGpuMemoryBuffer(buffer_size)));
 
+  buffer->OnAttach();
   // Acquire a texture mailbox for the contents of the buffer.
   cc::TextureMailbox texture_mailbox;
   std::unique_ptr<cc::SingleReleaseCallback> buffer_release_callback =
       buffer->ProduceTextureMailbox(&texture_mailbox, false, true);
   ASSERT_TRUE(buffer_release_callback);
 
   scoped_refptr<cc::ContextProvider> context_provider =
       aura::Env::GetInstance()
           ->context_factory()
           ->SharedMainThreadContextProvider();
   if (context_provider) {
     gpu::gles2::GLES2Interface* gles2 = context_provider->ContextGL();
     gles2->LoseContextCHROMIUM(GL_GUILTY_CONTEXT_RESET_ARB,
                                GL_INNOCENT_CONTEXT_RESET_ARB);
   }
 
+  // Release buffer.
+  bool is_lost = true;
+  buffer_release_callback->Run(gpu::SyncToken(), is_lost);
+
   // Producing a new texture mailbox for the contents of the buffer.
   std::unique_ptr<cc::SingleReleaseCallback> buffer_release_callback2 =
       buffer->ProduceTextureMailbox(&texture_mailbox, false, false);
-  ASSERT_TRUE(buffer_release_callback);
+  ASSERT_TRUE(buffer_release_callback2);
+  buffer->OnDetach();
 
-  // Release buffer.
-  bool is_lost = true;
-  buffer_release_callback->Run(gpu::SyncToken(), is_lost);
   buffer_release_callback2->Run(gpu::SyncToken(), false);
 }
 
 }  // namespace
 }  // namespace exo