Update the document links and sections (#5705)

Author: canova

docs-developer/data-sources.md

@@ -16,20 +16,6 @@ Samples don't record every event that happens within the system, so some informa
 
 ### More Documentation on the Gecko Profiler:
 
-- [nsIProfiler.idl](https://dxr.mozilla.org/mozilla-central/source/tools/profiler/gecko/nsIProfiler.idl)
-- [ProfileEntry.h](https://dxr.mozilla.org/mozilla-central/rev/b043233ec04f06768d59dcdfb9e928142280f3cc/tools/profiler/core/ProfileBufferEntry.h#322-411)
-
-- [Profile Data Format](./profile-data)
-
-## Timeline - DocShell Markers (unused in the Firefox Profiler)
-
-The Gecko Profiler records marker data, but it doesn't include all of the markers available in the system. There is a competing implementation of markers used exclusively by the Firefox Devtools that are recorded per DocShell. These are not currently integrated into the Firefox Profiler.
-
-- [Timeline C++ Implementation](https://dxr.mozilla.org/mozilla-central/source/docshell/base/timeline)
-- [Timeline Devtools JS Server](https://dxr.mozilla.org/mozilla-central/source/devtools/server/performance/timeline.ts)
-
-## Tracelogger (unused in the Firefox Profiler)
-
-While the previous performance tools collect information about how Gecko runs as a whole, Tracelogger is specific to the SpiderMonkey engine. Tracelogger is not sample based, therefore it records every step that the SpiderMonkey engine performs to run a given chunk of JavaScript code. It's primarily used by JavaScript engineers, and includes a firehose of information often reaching into the several gigs of information. There is no current integration of this information with the Firefox Profiler.
-
-- [Tracelogger on GitHub](https://github.com/h4writer/tracelogger)
+- [nsIProfiler.idl](https://searchfox.org/firefox-main/source/tools/profiler/gecko/nsIProfiler.idl)
+- [ProfileBufferEntry.h](https://searchfox.org/firefox-main/rev/5ccf4a7d77a329f237d3a41e400049f9c47dc71f/tools/profiler/core/ProfileBufferEntry.h#433-566)
+- [Gecko Profile Data Format](./gecko-profile-format.md)

docs-developer/gecko-profile-format.md

@@ -326,6 +326,6 @@ funcTable: {
 }
 ```
 
-[nsIProfiler]: https://dxr.mozilla.org/mozilla-central/source/tools/profiler/gecko/nsIProfiler.idl
+[nsIProfiler]: https://searchfox.org/firefox-main/source/tools/profiler/gecko/nsIProfiler.idl
 [ProfileBufferEntry.h]: https://searchfox.org/mozilla-central/rev/5966e98bdfa7355e0a3d9cce482f4717dc3419b0/tools/profiler/core/ProfileBufferEntry.h#358
 [profiler.firefox.com]: https://profiler.firefox.com