exo: Recreate Surface resources on context lost.

components/exo/buffer_unittest.cc

Index: components/exo/buffer_unittest.cc
diff --git a/components/exo/buffer_unittest.cc b/components/exo/buffer_unittest.cc
index bc708aa6db19182ba9f14f22d40089e0de60539e..987c29056538f8a580c6c9eedddd5c5583d68a9d 100644
--- a/components/exo/buffer_unittest.cc
+++ b/components/exo/buffer_unittest.cc
@@ -37,6 +37,7 @@ TEST_F(BufferTest, ReleaseCallback) {
   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 =
@@ -46,6 +47,10 @@ TEST_F(BufferTest, ReleaseCallback) {
   // 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);
 }
@@ -55,6 +60,7 @@ TEST_F(BufferTest, IsLost) {
   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 =
@@ -71,14 +77,16 @@ TEST_F(BufferTest, IsLost) {
                                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);
 }