ThreadedTest that a non-null OutputSurface that fails initialization immediately doesn't crash

cc/layer_tree_host_unittest_context.cc

 // Copyright 2012 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 "cc/layer_tree_host.h"
 
 #include "base/basictypes.h"
 #include "cc/content_layer.h"
 #include "cc/delegated_renderer_layer.h"
 #include "cc/delegated_renderer_layer_impl.h"
@@ skipping 762 matching lines @@
   scoped_refptr<VideoFrame> hw_video_frame_;
   scoped_refptr<VideoFrame> scaled_hw_video_frame_;
 
   FakeVideoFrameProvider color_frame_provider_;
   FakeVideoFrameProvider hw_frame_provider_;
   FakeVideoFrameProvider scaled_hw_frame_provider_;
 };
 
 SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostContextTestDontUseLostResources)
 
+class FakeWebGraphicsContext3DMakeCurrentFails :
+    public FakeWebGraphicsContext3D {
+ public:
+  virtual bool makeContextCurrent() OVERRIDE { return false; }
+};
+
+class LayerTreeHostContextTestFailsImmediately : public ThreadedTest {
+ public:
+  LayerTreeHostContextTestFailsImmediately()
+      : ThreadedTest() {
+  }
+
+  virtual void beginTest() OVERRIDE {
+    postSetNeedsCommitToMainThread();
+  }
+
+  virtual void didRecreateOutputSurface(bool succeeded) OVERRIDE {
+    EXPECT_FALSE(succeeded);
+    // If we make it this far without crashing, we pass!
+    endTest();
+  }
+
+  virtual void afterTest() OVERRIDE {
+  }
+
+  virtual scoped_ptr<OutputSurface> createOutputSurface() OVERRIDE {
+    scoped_ptr<WebGraphicsContext3D> context_3d(
+        new FakeWebGraphicsContext3DMakeCurrentFails);

[danakj, 2013/01/08 00:49:08]

I think you could just create a FakeWebGraphicsContext3d and call
loseContextCHROMIUM() on it immediately to get the same effect without needing
to make your own subclass.

+    return FakeOutputSurface::Create3d(
+        context_3d.Pass()).PassAs<OutputSurface>();
+  }
+};
+
+SINGLE_AND_MULTI_THREAD_TEST_F(LayerTreeHostContextTestFailsImmediately);
+
 }  // namespace
 }  // namespace cc