gistfile1.txt

diff --git a/components/tracing/tracing_messages.h b/components/tracing/tracing_messages.h
index 11196e3..ca79708 100644
--- a/components/tracing/tracing_messages.h
+++ b/components/tracing/tracing_messages.h
@@ -132,3 +132,6 @@ IPC_MESSAGE_CONTROL2(TracingHostMsg_ProcessMemoryDumpResponse,
 
 IPC_MESSAGE_CONTROL1(TracingHostMsg_TriggerBackgroundTrace,
                      std::string /* name */)
+
+
+// you need stuff here too
diff --git a/content/browser/tracing/trace_message_filter.cc b/content/browser/tracing/trace_message_filter.cc
index a26c654..c1777f6 100644
--- a/content/browser/tracing/trace_message_filter.cc
+++ b/content/browser/tracing/trace_message_filter.cc
@@ -43,6 +43,10 @@ bool TraceMessageFilter::OnMessageReceived(const IPC::Message& message) {
   // Always on IO thread (BrowserMessageFilter guarantee).
   bool handled = true;
   IPC_BEGIN_MESSAGE_MAP(TraceMessageFilter, message)
+
+      you need a handler here ... it\'ll need a guard on the commandline being present, but then
+      it should be a simple call from here to TracingControllerImpl Start/Stop methods.
+
     IPC_MESSAGE_HANDLER(TracingHostMsg_ChildSupportsTracing,
                         OnChildSupportsTracing)
     IPC_MESSAGE_HANDLER(TracingHostMsg_EndTracingAck, OnEndTracingAck)
diff --git a/content/renderer/gpu/gpu_benchmarking_extension.cc b/content/renderer/gpu/gpu_benchmarking_extension.cc
index 454f5f5..5718244 100644
--- a/content/renderer/gpu/gpu_benchmarking_extension.cc
+++ b/content/renderer/gpu/gpu_benchmarking_extension.cc
@@ -3,7 +3,7 @@
 // found in the LICENSE file.
 
 #include "content/renderer/gpu/gpu_benchmarking_extension.h"
-
+// copy this file into something like tracing_Extension.cc maybe?
 #include <string>
 
 #include "base/base64.h"
@@ -356,6 +356,15 @@ bool BeginSmoothScroll(v8::Isolate* isolate,
   // TODO(nduca): If the render_view_impl is destroyed while the gesture is in
   // progress, we will leak the callback and context. This needs to be fixed,
   // somehow.
+
+  // hereish in the v8 method implementaiton you'd want to do an IPC send to the
+  // browser-side tracing controller to start/stop/getdata.
+
+  // i think the main issue here is that i think tracing is a component. maybe components can have v8 extensions?
+
+  // if they cant, i could imagine the extension.cc could have a SetIPCDriver(SomeInterface*) and then the component
+  // can set that interface to here.
+
   context.render_view_impl()->QueueSyntheticGesture(
       gesture_params.Pass(),
       base::Bind(&OnSyntheticGestureCompleted, callback_and_context));

you'd probably also need to poke at child_trace_message_filter, as thats the thing that recieves replies from teh browser process. that'd need to trampoline back into the extension.