Pass GpuMemoryBuffer backed VideoFrame from browser to renderer processes

media/capture/content/thread_safe_capture_oracle.cc

Index: media/capture/content/thread_safe_capture_oracle.cc
diff --git a/media/capture/content/thread_safe_capture_oracle.cc b/media/capture/content/thread_safe_capture_oracle.cc
index cbc49486943259042b4342d1406f38ee2ab73589..5bedc4a37bfdd76c5065cf88fffca25de1a86d32 100644
--- a/media/capture/content/thread_safe_capture_oracle.cc
+++ b/media/capture/content/thread_safe_capture_oracle.cc
@@ -119,7 +119,7 @@ bool ThreadSafeCaptureOracle::ObserveEventAndDecideCapture(
     *storage = VideoFrame::WrapExternalData(
         media::PIXEL_FORMAT_I420, coded_size, gfx::Rect(visible_size),
         visible_size, static_cast<uint8*>(output_buffer->data()),
-        output_buffer->size(), base::TimeDelta());
+        output_buffer->mapped_size(), base::TimeDelta());
     DCHECK(*storage);
   }
   *callback =