Add logging of DXVAVDA errors with line numbers.

media/gpu/dxva_picture_buffer_win.cc

Index: media/gpu/dxva_picture_buffer_win.cc
diff --git a/media/gpu/dxva_picture_buffer_win.cc b/media/gpu/dxva_picture_buffer_win.cc
index ff4d4ad19fc44dac599799800f09c6130f749793..c547f5913d33e3e96de5fcdbe32f65b495495913 100644
--- a/media/gpu/dxva_picture_buffer_win.cc
+++ b/media/gpu/dxva_picture_buffer_win.cc
@@ -15,10 +15,19 @@
 
 namespace media {
 
+namespace {
+
+void LogDXVAError(int line) {
+  LOG(ERROR) << "Error in dxva_picture_buffer_win.cc on line " << line;
+}
+
+}  // namespace
+
 #define RETURN_ON_FAILURE(result, log, ret) \
   do {                                      \
     if (!(result)) {                        \
       DLOG(ERROR) << log;                   \
+      LogDXVAError(__LINE__);               \
       return ret;                           \
     }                                       \
   } while (0)