Fix UiThreadGpu initialization for video accelerator tests

content/common/gpu/media/video_decode_accelerator_unittest.cc

Index: content/common/gpu/media/video_decode_accelerator_unittest.cc
diff --git a/content/common/gpu/media/video_decode_accelerator_unittest.cc b/content/common/gpu/media/video_decode_accelerator_unittest.cc
index 8f6149d57ca5fdde39b2f2e29c178d633917ad9d..7fdd06f7cdaffa1ddd7ff8873009c907ece8d322 100644
--- a/content/common/gpu/media/video_decode_accelerator_unittest.cc
+++ b/content/common/gpu/media/video_decode_accelerator_unittest.cc
@@ -46,6 +46,7 @@
 #include "base/synchronization/condition_variable.h"
 #include "base/synchronization/lock.h"
 #include "base/synchronization/waitable_event.h"
+#include "base/thread_task_runner_handle.h"
 #include "base/threading/thread.h"
 #include "content/common/gpu/media/fake_video_decode_accelerator.h"
 #include "content/common/gpu/media/rendering_helper.h"
@@ -74,6 +75,7 @@
 
 #if defined(USE_OZONE)
 #include "ui/ozone/public/ozone_platform.h"
+#include "ui/ozone/public/ui_thread_gpu.h"
 #endif  // defined(USE_OZONE)
 
 using media::VideoDecodeAccelerator;
@@ -227,6 +229,16 @@ class VideoDecodeAcceleratorTestEnvironment : public ::testing::Environment {
     rendering_thread_.task_runner()->PostTask(
         FROM_HERE, base::Bind(&RenderingHelper::InitializeOneOff, &done));
     done.Wait();
+
+#if defined(USE_OZONE)
+    // Need to initialize after the rendering side since the rendering side
+    // initializes the "GPU" parts of Ozone.
+    //
+    // This also needs to be done in the test environment since this shouldn't
+    // be initialized multiple times for the same Ozone platform.
+    ui_thread_gpu_.Initialize(base::ThreadTaskRunnerHandle::Get(),
+                              GetRenderingTaskRunner());
+#endif
   }
 
   void TearDown() override { rendering_thread_.Stop(); }
@@ -237,6 +249,9 @@ class VideoDecodeAcceleratorTestEnvironment : public ::testing::Environment {
 
  private:
   base::Thread rendering_thread_;
+#if defined(USE_OZONE)
+  ui::UiThreadGpu ui_thread_gpu_;
+#endif
 
   DISALLOW_COPY_AND_ASSIGN(VideoDecodeAcceleratorTestEnvironment);
 };