correct comment on GetTabManager

chrome/browser/browser_process.h

Index: chrome/browser/browser_process.h
diff --git a/chrome/browser/browser_process.h b/chrome/browser/browser_process.h
index cf3a3a96b031f499c89b752d6530c541a94ef4a6..bf911920c264e9b0d5077d554c6320cf83c4dbd0 100644
--- a/chrome/browser/browser_process.h
+++ b/chrome/browser/browser_process.h
@@ -269,7 +269,8 @@ class BrowserProcess {
 
   virtual gcm::GCMDriver* gcm_driver() = 0;
 
-  // Returns the tab manager if it exists, null otherwise.
+  // Returns the tab manager if it exists, or create a new one to return
+  // otherwise. Returns nullptr if invoked from a non-supported platform.

[Georges Khalil, 2016/08/15 21:48:24]

I would simplify this, I don't think it's worth mentioning that we create it on
the first call:

// Returns the tab manager. On non-supported platforms, this returns null.

   virtual memory::TabManager* GetTabManager() = 0;
 
   // Returns the default web client state of Chrome (i.e., was it the user's