Moved the TraceUploader to chrome/ and abstracted it for alternative new upload destinations.

content/browser/tracing/tracing_ui.h

Index: content/browser/tracing/tracing_ui.h
diff --git a/content/browser/tracing/tracing_ui.h b/content/browser/tracing/tracing_ui.h
index 7b69337c0917d6b53708e1bcdff6c0d0a994e86d..65bad8356acb75be6da4d44284cae1d56bb23255 100644
--- a/content/browser/tracing/tracing_ui.h
+++ b/content/browser/tracing/tracing_ui.h
@@ -13,6 +13,8 @@
 
 namespace content {
 
+class TracingDelegate;
+
 // The C++ back-end for the chrome://tracing webui page.
 class CONTENT_EXPORT TracingUI : public WebUIController {
  public:
@@ -26,6 +28,7 @@ class CONTENT_EXPORT TracingUI : public WebUIController {
                              const std::string& error_message);
 
  private:
+  scoped_ptr<TracingDelegate> delegate_;
   base::WeakPtrFactory<TracingUI> weak_factory_;
 
   DISALLOW_COPY_AND_ASSIGN(TracingUI);