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

chrome/app/chrome_exe_main_win.cc

Index: chrome/app/chrome_exe_main_win.cc
diff --git a/chrome/app/chrome_exe_main_win.cc b/chrome/app/chrome_exe_main_win.cc
index 22ec4bf4f40a6c8b4a9efa2e68ec11aef881fca3..75454db2418a66fb6edd03242756553eb952c9e5 100644
--- a/chrome/app/chrome_exe_main_win.cc
+++ b/chrome/app/chrome_exe_main_win.cc
@@ -33,7 +33,6 @@
 #include "components/crash/content/app/crash_switches.h"
 #include "components/crash/content/app/crashpad.h"
 #include "components/crash/content/app/run_as_crashpad_handler_win.h"
-#include "components/startup_metric_utils/browser/startup_metric_utils.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/result_codes.h"
 
@@ -225,7 +224,7 @@ int main() {
         *base::CommandLine::ForCurrentProcess());
   }
 
-  startup_metric_utils::RecordExeMainEntryPointTime(base::Time::Now());
+  const base::TimeTicks exe_entry_point_ticks = base::TimeTicks::Now();

[brucedawson, 2016/09/16 21:38:39]

What was the reason for changing from Time to TimeTicks?

[grt (UTC plus 2), 2016/09/17 09:30:05]

Oops. I thought it was the right thing to do, but now that you've asked I see
that startup_metrics_utils has a convoluted StartupTimeToTimeTicks that is now
being bypassed. I'll ask the authors of that if it's necessary for that
conversion to take place here and in chrome.dll. As it is, the calculations are
done twice (once in chrome.exe and once in chrome.dll), so they are not
guaranteed to have the same deltas. Thanks for questioning that!

[fdoray, 2016/09/19 17:03:28]

This is the right thing to do. We should use base::TimeTicks whenever possible
in startup_metric_utils.

 
   // Signal Chrome Elf that Chrome has begun to start.
   SignalChromeElf();
@@ -243,7 +242,7 @@ int main() {
   // Load and launch the chrome dll. *Everything* happens inside.
   VLOG(1) << "About to load main DLL.";
   MainDllLoader* loader = MakeMainDllLoader();
-  int rc = loader->Launch(instance);
+  int rc = loader->Launch(instance, exe_entry_point_ticks);
   loader->RelaunchChromeBrowserWithNewCommandLineIfNeeded();
   delete loader;
   return rc;