Break chrome_initial's dependence on //components/startup_metric_utils/browser:lib

chrome/app/chrome_main_delegate.h

Index: chrome/app/chrome_main_delegate.h
diff --git a/chrome/app/chrome_main_delegate.h b/chrome/app/chrome_main_delegate.h
index 6751de27ff18ab7648d1f31f25f319a818137931..278858c4e2fb4fdeba218977bfd34cd1eb6f3890 100644
--- a/chrome/app/chrome_main_delegate.h
+++ b/chrome/app/chrome_main_delegate.h
@@ -8,6 +8,7 @@
 #include <memory>
 
 #include "base/macros.h"
+#include "base/time/time.h"
 #include "build/build_config.h"
 #include "chrome/common/chrome_content_client.h"
 #include "content/public/app/content_main_delegate.h"
@@ -23,6 +24,10 @@ class CommandLine;
 class ChromeMainDelegate : public content::ContentMainDelegate {
  public:
   ChromeMainDelegate();
+
+  // |exe_entry_point_ticks| is the time at which the main function of the
+  // executable was entered, or null if not available.
+  explicit ChromeMainDelegate(base::TimeTicks exe_entry_point_ticks);
   ~ChromeMainDelegate() override;
 
  protected: