Don't free non-tile resources on GPU rasterization toggle

cc/layers/texture_layer_impl_unittest.cc

Index: cc/layers/texture_layer_impl_unittest.cc
diff --git a/cc/layers/texture_layer_impl_unittest.cc b/cc/layers/texture_layer_impl_unittest.cc
index 0551951c12d95118f7a8bdda3e6643178f2dbedf..f901cdad52bf06a6f2e267b340b1c0282f9cf35e 100644
--- a/cc/layers/texture_layer_impl_unittest.cc
+++ b/cc/layers/texture_layer_impl_unittest.cc
@@ -147,5 +147,50 @@ TEST(TextureLayerImplTest, OutputIsSecure) {
   }
 }
 
+TEST(TextureLayerImplTest, ResourceNotFreedOnGpuRasterToggle) {
+  LayerTreeSettings settings;
+  settings.gpu_rasterization_enabled = true;
+  LayerTestCommon::LayerImplTest impl(settings);
+  impl.host_impl()->AdvanceToNextFrame(base::TimeDelta::FromMilliseconds(1));
+
+  gfx::Size layer_size(1000, 1000);
+  gfx::Size viewport_size(1000, 1000);
+
+  gpu::Mailbox mailbox;
+  impl.compositor_frame_sink()
+      ->context_provider()
+      ->ContextGL()
+      ->GenMailboxCHROMIUM(mailbox.name);
+  TextureMailbox texture_mailbox(
+      mailbox,
+      gpu::SyncToken(gpu::CommandBufferNamespace::GPU_IO, 0x123,
+                     gpu::CommandBufferId::FromUnsafeValue(0x234), 0x456),
+      GL_TEXTURE_2D);
+
+  TextureLayerImpl* texture_layer_impl =
+      impl.AddChildToRoot<TextureLayerImpl>();
+  texture_layer_impl->SetBounds(layer_size);
+  texture_layer_impl->SetDrawsContent(true);
+  bool released = false;
+  texture_layer_impl->SetTextureMailbox(
+      texture_mailbox,
+      SingleReleaseCallbackImpl::Create(base::Bind(
+          [](bool* released, const gpu::SyncToken& sync_token, bool lost,
+             BlockingTaskRunner* main_thread_task_runner) { *released = true; },
+          base::Unretained(&released))));
+
+  impl.CalcDrawProps(viewport_size);
+
+  // Gpu rasterization is disabled by default.
+  EXPECT_FALSE(impl.host_impl()->use_gpu_rasterization());
+  EXPECT_FALSE(released);
+  // Toggling the gpu rasterization clears all tilings on both trees.
+  impl.host_impl()->SetHasGpuRasterizationTrigger(true);
+  impl.host_impl()->SetContentIsSuitableForGpuRasterization(true);
+  impl.host_impl()->CommitComplete();
+  EXPECT_TRUE(impl.host_impl()->use_gpu_rasterization());
+  EXPECT_FALSE(released);
+}
+
 }  // namespace
 }  // namespace cc