[Mojo Video Capture] Adapt video_capture service to refactored video capture stack

media/capture/video/fake_video_capture_device_unittest.cc

Index: media/capture/video/fake_video_capture_device_unittest.cc
diff --git a/media/capture/video/fake_video_capture_device_unittest.cc b/media/capture/video/fake_video_capture_device_unittest.cc
index 927845c8abed4f3dd8a94a4b29c48a8d1fed95a8..2af74e7a3eb130bf0892f94f1a5cd764a148ea2f 100644
--- a/media/capture/video/fake_video_capture_device_unittest.cc
+++ b/media/capture/video/fake_video_capture_device_unittest.cc
@@ -40,8 +40,8 @@ class StubBufferHandle : public VideoCaptureBufferHandle {
       : mapped_size_(mapped_size), data_(data) {}
 
   size_t mapped_size() const override { return mapped_size_; }
-  uint8_t* data() override { return data_; }
-  const uint8_t* data() const override { return data_; }
+  uint8_t* data() const override { return data_; }
+  const uint8_t* const_data() const override { return data_; }
 
  private:
   const size_t mapped_size_;