Don't fetch histograms from the same process.

content/browser/profiler_controller_impl.cc

Index: content/browser/profiler_controller_impl.cc
===================================================================
--- content/browser/profiler_controller_impl.cc	(revision 276253)
+++ content/browser/profiler_controller_impl.cc	(working copy)
@@ -5,7 +5,7 @@
 #include "content/browser/profiler_controller_impl.h"
 
 #include "base/bind.h"
-#include "base/command_line.h"
+#include "base/process/process_handle.h"
 #include "base/tracked_objects.h"
 #include "content/common/child_process_messages.h"
 #include "content/public/browser/browser_child_process_host_iterator.h"
@@ -13,7 +13,6 @@
 #include "content/public/browser/child_process_data.h"
 #include "content/public/browser/profiler_subscriber.h"
 #include "content/public/browser/render_process_host.h"
-#include "content/public/common/content_switches.h"
 
 namespace content {
 
@@ -76,14 +75,14 @@
     int sequence_number) {
   DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
 
+  const base::ProcessId current_proc_id = base::GetCurrentProcId();
   int pending_processes = 0;
   for (BrowserChildProcessHostIterator iter; !iter.Done(); ++iter) {
-    // Skips requesting profiler data from the "GPU Process" if we are using in
-    // process GPU. Those stats should be in the Browser-process's GPU thread.
-    if (iter.GetData().process_type == PROCESS_TYPE_GPU &&
-        CommandLine::ForCurrentProcess()->HasSwitch(switches::kInProcessGPU)) {
+    // In some cases, the child process may be the same as the current process -
+    // for example the GPU process may be the same as the browser process. Don't
+    // ask it for profiler data in that case.
+    if (base::GetProcId(iter.GetData().handle) == current_proc_id)
       continue;
-    }
 
     ++pending_processes;
     if (!iter.Send(new ChildProcessMsg_GetChildProfilerData(sequence_number)))