Re-assign a few TODOs to wittman@

Change-Id: Ia542a4fdc9ee86b06b23a20a8d01ea0ae562224f
Reviewed-on: https://chromium-review.googlesource.com/c/1347041Reviewed-by: Mike Wittman <wittman@chromium.org>
Commit-Queue: Xi Cheng <chengx@chromium.org>
Cr-Commit-Position: refs/heads/master@{#610319}

base/profiler/win32_stack_frame_unwinder.cc

@@ -119,7 +119,7 @@ Win32StackFrameUnwinder::~Win32StackFrameUnwinder() {}
 bool Win32StackFrameUnwinder::TryUnwind(CONTEXT* context,
                                         ScopedModuleHandle* module) {
 #ifdef _WIN64
-  // TODO(chengx): update base::ModuleCache to return a ScopedModuleHandle and
+  // TODO(wittman): update base::ModuleCache to return a ScopedModuleHandle and
   // use it for this module lookup.
   ScopedModuleHandle frame_module =
       unwind_functions_->GetModuleForProgramCounter(ContextPC(context));

components/metrics/call_stack_profile_builder.cc

@@ -65,7 +65,7 @@ void CallStackProfileBuilder::OnSampleCompleted(
   OnSampleCompleted(std::move(frames), 1);
 }
 
-// TODO(chengx): record |count| as per-Stacksample metadata in the new proto
+// TODO(wittman): record |count| as per-Stacksample metadata in the new proto
 // format.
 void CallStackProfileBuilder::OnSampleCompleted(
     std::vector<base::StackSamplingProfiler::Frame> frames,

components/metrics/call_stack_profile_metrics_provider.cc

@@ -23,7 +23,8 @@ namespace {
 // due to profile deserialization when profile uploads are delayed (e.g. due to
 // being offline). Capping at this threshold loses approximately 0.5% of
 // profiles on canary and dev.
-// TODO(chengx): Remove this threshold after crbug.com/903972 is fixed.
+//
+// TODO(wittman): Remove this threshold after crbug.com/903972 is fixed.
 const size_t kMaxPendingProfiles = 1250;
 
 // PendingProfiles ------------------------------------------------------------