Stack sampling profiler: run the profiler in the GPU process on trunk builds

chrome/browser/chrome_browser_main.cc

Index: chrome/browser/chrome_browser_main.cc
diff --git a/chrome/browser/chrome_browser_main.cc b/chrome/browser/chrome_browser_main.cc
index 332491bdc5ec700d5bbdf3606b11f4a79c1b98dc..416f2c2c38af78e70a0da3dec859c27d86ca0e3c 100644
--- a/chrome/browser/chrome_browser_main.cc
+++ b/chrome/browser/chrome_browser_main.cc
@@ -120,6 +120,7 @@
 #include "chrome/common/net/net_resource_provider.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/profiling.h"
+#include "chrome/common/stack_sampling_configuration.h"
 #include "chrome/common/variations/variations_util.h"
 #include "chrome/grit/generated_resources.h"
 #include "chrome/installer/util/google_update_settings.h"
@@ -763,7 +764,8 @@ ChromeBrowserMainParts::ChromeBrowserMainParts(
       browser_field_trials_(parameters.command_line),
       sampling_profiler_(
           base::PlatformThread::CurrentId(),
-          sampling_profiler_config_.GetSamplingParams(),
+          StackSamplingConfiguration::Get()->
+              GetSamplingParamsForCurrentProcess(),
           metrics::CallStackProfileMetricsProvider::GetProfilerCallback(
               metrics::CallStackProfileParams(
                   metrics::CallStackProfileParams::BROWSER_PROCESS,
@@ -773,7 +775,7 @@ ChromeBrowserMainParts::ChromeBrowserMainParts(
       profile_(NULL),
       run_message_loop_(true),
       local_state_(NULL) {
-  if (sampling_profiler_config_.IsProfilerEnabled())
+  if (StackSamplingConfiguration::Get()->IsProfilerEnabledForCurrentProcess())
     sampling_profiler_.Start();
 
   // If we're running tests (ui_task is non-null).
@@ -892,7 +894,7 @@ void ChromeBrowserMainParts::SetupFieldTrials() {
 
   // Register a synthetic field trial for the sampling profiler configuration
   // that was already chosen.
-  sampling_profiler_config_.RegisterSyntheticFieldTrial(
+  StackSamplingConfiguration::Get()->RegisterSyntheticFieldTrial(
       base::Bind(&ChromeMetricsServiceAccessor::RegisterSyntheticFieldTrial));
 
 #if defined(OS_WIN) || defined(OS_MACOSX) || \