Stack sampling profiler: move configuration to chrome/common

chrome/common/stack_sampling_configuration.h

Index: chrome/common/stack_sampling_configuration.h
diff --git a/chrome/browser/stack_sampling_configuration.h b/chrome/common/stack_sampling_configuration.h
similarity index 73%
rename from chrome/browser/stack_sampling_configuration.h
rename to chrome/common/stack_sampling_configuration.h
index 9a52b037b7e4769c7d4980a9603465f009b1992f..c38c5f2bf6d21937918199905d8508d0271156e9 100644
--- a/chrome/browser/stack_sampling_configuration.h
+++ b/chrome/common/stack_sampling_configuration.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef CHROME_BROWSER_STACK_SAMPLING_CONFIGURATION_H_
-#define CHROME_BROWSER_STACK_SAMPLING_CONFIGURATION_H_
+#ifndef CHROME_COMMON_STACK_SAMPLING_CONFIGURATION_H_
+#define CHROME_COMMON_STACK_SAMPLING_CONFIGURATION_H_
 
 #include "base/macros.h"
 #include "base/profiler/stack_sampling_profiler.h"
@@ -21,8 +21,10 @@ class StackSamplingConfiguration {
   // Returns true if the profiler should be started at all.
   bool IsProfilerEnabled() const;
 
-  // Register the chosen configuration as a synthetic field trial.
-  void RegisterSyntheticFieldTrial() const;
+  // Get the synthetic field trial configuration. Returns true if a synthetic
+  // field trial should be registered.
+  bool GetSyntheticFieldTrial(std::string* trial_name,
+                              std::string* group_name) const;
 
  private:
   enum ProfileConfiguration {
@@ -41,4 +43,4 @@ class StackSamplingConfiguration {
   DISALLOW_COPY_AND_ASSIGN(StackSamplingConfiguration);
 };
 
-#endif  // CHROME_BROWSER_STACK_SAMPLING_CONFIGURATION_H_
+#endif  // CHROME_COMMON_STACK_SAMPLING_CONFIGURATION_H_