Add memory and CPU histogram for OOPIF

chrome/browser/memory_details.h

Index: chrome/browser/memory_details.h
diff --git a/chrome/browser/memory_details.h b/chrome/browser/memory_details.h
index 7cd017dedc98b82e7b178b460accbccae26a29f4..9c7ccdb130ed9c9db6d580e77dded1c49c59b443 100644
--- a/chrome/browser/memory_details.h
+++ b/chrome/browser/memory_details.h
@@ -65,6 +65,8 @@ struct ProcessMemoryInformation {
   RendererProcessType renderer_type;
   // A collection of titles used, i.e. for a tab it'll show all the page titles.
   std::vector<base::string16> titles;
+  // True if it is a renderer containing an out-of-process iframe.
+  bool contains_oopif = false;

[jochen (gone - plz use gerrit), 2017/02/17 15:32:46]

please initialize this field in the ctor instead of inline as all other fields
are initialized in the ctor

 };
 
 typedef std::vector<ProcessMemoryInformation> ProcessMemoryInformationList;