[IPH] Don't listen to new-tab/close-tab events from other profiles

Previously, IPH code would listen to other profiles' events, for the
"reopen tab" feature. This is overkill, since events from a second
profile shouldn't trigger IPH in the first profile.

Bug: 1134314
Change-Id: I95cf63ab90949d03532f951c29b4db17f34cd654
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2443756Reviewed-by: Collin Baker <collinbaker@google.com>
Reviewed-by: Collin Baker <collinbaker@chromium.org>
Commit-Queue: Nicolas Ouellet-Payeur <nicolaso@chromium.org>
Cr-Commit-Position: refs/heads/master@{#813166}

chrome/browser/ui/in_product_help/reopen_tab_in_product_help.cc

@@ -31,6 +31,7 @@ ReopenTabInProductHelp::ReopenTabInProductHelp(Profile* profile,
   // currently living browsers.
   BrowserList::AddObserver(this);
   for (Browser* browser : *BrowserList::GetInstance()) {
+    if (browser->profile() == profile_)
       active_tab_tracker_.AddTabStripModel(browser->tab_strip_model());
   }
 
@@ -42,6 +43,7 @@ ReopenTabInProductHelp::ReopenTabInProductHelp(Profile* profile,
 ReopenTabInProductHelp::~ReopenTabInProductHelp() {
   BrowserList::RemoveObserver(this);
   for (Browser* browser : *BrowserList::GetInstance()) {
+    if (browser->profile() == profile_)
       active_tab_tracker_.RemoveTabStripModel(browser->tab_strip_model());
   }
 }
@@ -71,10 +73,12 @@ void ReopenTabInProductHelp::OnShowHelp() {
 }
 
 void ReopenTabInProductHelp::OnBrowserAdded(Browser* browser) {
+  if (browser->profile() == profile_)
     active_tab_tracker_.AddTabStripModel(browser->tab_strip_model());
 }
 
 void ReopenTabInProductHelp::OnBrowserRemoved(Browser* browser) {
+  if (browser->profile() == profile_)
     active_tab_tracker_.RemoveTabStripModel(browser->tab_strip_model());
 }