FBTF: Move virtual methods to implementation files.

chrome/browser/browsing_instance.cc

Index: chrome/browser/browsing_instance.cc
diff --git a/chrome/browser/browsing_instance.cc b/chrome/browser/browsing_instance.cc
index 41a3abc4196dab9d3793bbea91c78bdabecf9825..ec433b78e9e610bbee3aaa3918ab04c3c6569b62 100644
--- a/chrome/browser/browsing_instance.cc
+++ b/chrome/browser/browsing_instance.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/browsing_instance.h"
 
 #include "base/command_line.h"
+#include "base/logging.h"
 #include "chrome/browser/profile.h"
 #include "chrome/browser/renderer_host/site_instance.h"
 #include "chrome/common/chrome_switches.h"
@@ -14,6 +15,10 @@
 BrowsingInstance::ProfileSiteInstanceMap
     BrowsingInstance::profile_site_instance_map_;
 
+BrowsingInstance::BrowsingInstance(Profile* profile)
+    : profile_(profile) {
+}
+
 bool BrowsingInstance::ShouldUseProcessPerSite(const GURL& url) {
   // Returns true if we should use the process-per-site model.  This will be
   // the case if the --process-per-site switch is specified, or in
@@ -123,3 +128,9 @@ void BrowsingInstance::UnregisterSiteInstance(SiteInstance* site_instance) {
     map->erase(i);
   }
 }
+
+BrowsingInstance::~BrowsingInstance() {
+  // We should only be deleted when all of the SiteInstances that refer to
+  // us are gone.
+  DCHECK(site_instance_map_.empty());
+}