Re-land first pass BackgroundTracingManager.

content/public/browser/background_tracing_config.cc

Index: content/public/browser/background_tracing_config.cc
diff --git a/content/common/gpu/media/vp8_picture.cc b/content/public/browser/background_tracing_config.cc
similarity index 53%
copy from content/common/gpu/media/vp8_picture.cc
copy to content/public/browser/background_tracing_config.cc
index 764c3b1bd739a88810bbcb1ca47dbafec9c036e0..e3c0c1b52b80d5167a91908436f8393152dc2ee2 100644
--- a/content/common/gpu/media/vp8_picture.cc
+++ b/content/public/browser/background_tracing_config.cc
@@ -2,18 +2,14 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "content/common/gpu/media/vp8_picture.h"
+#include "content/public/browser/background_tracing_config.h"
 
 namespace content {
 
-VP8Picture::VP8Picture() {
+BackgroundTracingConfig::BackgroundTracingConfig(Mode mode) : mode(mode) {
 }
 
-VP8Picture::~VP8Picture() {
-}
-
-V4L2VP8Picture* VP8Picture::AsV4L2VP8Picture() {
-  return nullptr;
+BackgroundTracingConfig::~BackgroundTracingConfig() {
 }
 
 }  // namespace content