Update from https://crrev.com/317530

gpu/command_buffer/service/mailbox_manager_unittest.cc

Index: gpu/command_buffer/service/mailbox_manager_unittest.cc
diff --git a/gpu/command_buffer/service/mailbox_manager_unittest.cc b/gpu/command_buffer/service/mailbox_manager_unittest.cc
index 388e1da5a299a0bcce02dacf12a93a6b1a628f3e..a22078c2652c6518e87a9f482560318ae4c527e6 100644
--- a/gpu/command_buffer/service/mailbox_manager_unittest.cc
+++ b/gpu/command_buffer/service/mailbox_manager_unittest.cc
@@ -595,6 +595,66 @@ TEST_F(MailboxManagerSyncTest, ClearedStateSynced) {
   EXPECT_EQ(NULL, manager2_->ConsumeTexture(name));
 }
 
+TEST_F(MailboxManagerSyncTest, SyncIncompleteTexture) {
+  const GLuint kNewTextureId = 1234;
+
+  // Create but not define texture.
+  Texture* texture = CreateTexture();
+  SetTarget(texture, GL_TEXTURE_2D, 1);
+  EXPECT_FALSE(texture->IsDefined());
+
+  Mailbox name = Mailbox::Generate();
+  manager_->ProduceTexture(name, texture);
+  EXPECT_EQ(texture, manager_->ConsumeTexture(name));
+
+  // Synchronize
+  manager_->PushTextureUpdates(0);
+  manager2_->PullTextureUpdates(0);
+
+  // Should sync to new texture which is not defined.
+  EXPECT_CALL(*gl_, GenTextures(1, _))
+      .WillOnce(SetArgPointee<1>(kNewTextureId));
+  SetupUpdateTexParamExpectations(kNewTextureId, texture->min_filter(),
+                                  texture->mag_filter(), texture->wrap_s(),
+                                  texture->wrap_t());
+  Texture* new_texture = manager2_->ConsumeTexture(name);
+  ASSERT_TRUE(new_texture);
+  EXPECT_NE(texture, new_texture);
+  EXPECT_EQ(kNewTextureId, new_texture->service_id());
+  EXPECT_FALSE(new_texture->IsDefined());
+
+  // Change cleared to false.
+  SetLevelInfo(texture,
+               GL_TEXTURE_2D,
+               0,
+               GL_RGBA,
+               1,
+               1,
+               1,
+               0,
+               GL_RGBA,
+               GL_UNSIGNED_BYTE,
+               true);
+  SetParameter(texture, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
+  SetParameter(texture, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+  EXPECT_TRUE(texture->IsDefined());
+
+  // Synchronize
+  manager_->PushTextureUpdates(0);
+  SetupUpdateTexParamExpectations(
+      kNewTextureId, GL_LINEAR, GL_LINEAR, GL_REPEAT, GL_REPEAT);
+  manager2_->PullTextureUpdates(0);
+
+  // Cleared state should be synced.
+  EXPECT_TRUE(new_texture->IsDefined());
+
+  DestroyTexture(texture);
+  DestroyTexture(new_texture);
+
+  EXPECT_EQ(NULL, manager_->ConsumeTexture(name));
+  EXPECT_EQ(NULL, manager2_->ConsumeTexture(name));
+}
+
 // Putting the same texture into multiple mailboxes should result in sharing
 // only a single texture also within a synchronized manager instance.
 TEST_F(MailboxManagerSyncTest, SharedThroughMultipleMailboxes) {
@@ -671,8 +731,6 @@ TEST_F(MailboxManagerSyncTest, ProduceBothWays) {
   DestroyTexture(new_texture);
 }
 
-// TODO: Produce incomplete texture
-
 // TODO: Texture::level_infos_[][].size()
 
 // TODO: unsupported targets and formats