cc: Put context-loss tests in layer_tree_host_unittest_context.cc

These tests cover all of the cases covered by the context loss layout test and
more. It also provides full coverage both in single-thread and multi-thread modes.

I've moved tests from LayerTreeHostTests as usual, but also tests from
LayerTreeHostImplTests, and implemented them using the real commit flow,
instantiating layers by making the main thread versions of the layers, etc. This
makes for a much more realistic test, and doesn't rely on as much internal
compositor knowledge.

While digging around, I found that the layersFreeTextures test was not testing
anything. Then I also noticed that most of the layers in the test are not
actually responsible to free their resources when they disappear. So I made the
test do its job, and made the test just check layers that own resources - namely
IOSurface and Video layers.

Tests:
LayerTreeHostContextTestLostContextSucceeds.runSingleThread
LayerTreeHostContextTestLostContextSucceeds.runMultiThread
LayerTreeHostContextTestLostContextSucceedsWithContent.NoSurface_SingleThread
LayerTreeHostContextTestLostContextSucceedsWithContent.NoSurface_MultiThread
LayerTreeHostContextTestLostContextSucceedsWithContent.WithSurface_SingleThread
LayerTreeHostContextTestLostContextSucceedsWithContent.WithSurface_MultiThread
LayerTreeHostContextTestLostContextFails.RepeatLoss100_SingleThread
LayerTreeHostContextTestLostContextFails.RepeatLoss100_MultiThread
LayerTreeHostContextTestLostContextFails.FailRecreate100_SingleThread
LayerTreeHostContextTestLostContextFails.FailRecreate100_MultiThread
LayerTreeHostContextTestFinishAllRenderingAfterLoss.runSingleThread
LayerTreeHostContextTestFinishAllRenderingAfterLoss.runMultiThread
LayerTreeHostContextTestLostContextAndEvictTextures.LoseAfterEvict_SingleThread
LayerTreeHostContextTestLostContextAndEvictTextures.LoseAfterEvict_MultiThread
LayerTreeHostContextTestLostContextAndEvictTextures.LoseBeforeEvict_SingleThread
LayerTreeHostContextTestLostContextAndEvictTextures.LoseBeforeEvict_MultiThread
LayerTreeHostContextTestLostContextWhileUpdatingResources.runSingleThread
LayerTreeHostContextTestLostContextWhileUpdatingResources.runMultiThread
LayerTreeHostContextTestLayersNotified.runSingleThread
LayerTreeHostContextTestLayersNotified.runMultiThread
LayerTreeHostContextTestDontUseLostResources.runSingleThread
LayerTreeHostContextTestDontUseLostResources.runMultiThread

Review URL: https://chromiumcodereview.appspot.com/11662003

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@175080 0039d316-1c4b-4281-b951-d872f2087c98

1 files changed, 13 insertions, 0 deletions

diff --git a/cc/test/fake_content_layer.cc b/cc/test/fake_content_layer.cc
index f217e93..c103b24 100644
--- a/cc/test/fake_content_layer.cc
+++ b/cc/test/fake_content_layer.cc
@@ -4,6 +4,9 @@
 
 #include "cc/test/fake_content_layer.h"
 
+#include "cc/prioritized_resource.h"
+#include "cc/test/fake_content_layer_impl.h"
+
 namespace cc {
 
 FakeContentLayer::FakeContentLayer(ContentLayerClient* client)
@@ -16,6 +19,11 @@ FakeContentLayer::FakeContentLayer(ContentLayerClient* client)
 
 FakeContentLayer::~FakeContentLayer() {}
 
+scoped_ptr<LayerImpl> FakeContentLayer::createLayerImpl(
+    LayerTreeImpl* tree_impl) {
+  return FakeContentLayerImpl::Create(tree_impl, m_layerId).PassAs<LayerImpl>();
+}
+
 void FakeContentLayer::update(
     ResourceUpdateQueue& queue,
     const OcclusionTracker* occlusion,
@@ -24,4 +32,9 @@ void FakeContentLayer::update(
   update_count_++;
 }
 
+bool FakeContentLayer::HaveBackingAt(int i, int j) {
+  const PrioritizedResource* resource = resourceAtForTesting(i, j);
+  return resource && resource->haveBackingTexture();
+}
+
 }  // namespace cc