Add additional closeAllTabs(boolean uponExit) methods

chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModel.java

Index: chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModel.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModel.java b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModel.java
index 565cfc041fad14c19557cb07b68c81869d3cde68..5e0e87b997c477a805b190865b5d9aa30863f196 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModel.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/tabmodel/TabModel.java
@@ -92,6 +92,13 @@ public interface TabModel extends TabList {
     public void closeAllTabs(boolean allowDelegation);
 
     /**
+     * Close all the tabs on this model.
+     * @param uponExit true iff the tabs are being closed upon application exit (after user presses
+     *                 the system back button)
+     */
+    public void closeAllTabs(boolean allowDelegation, boolean uponExit);

[David Trainor- moved to gerrit, 2014/10/29 17:48:54]

Hmm we should get rid of some of these other closeAllTabs() methods.  I'd rather
have one and a utility method that handles passing default values that we can
use for convenience.

Also javadoc!

[Theresa, 2014/10/29 18:00:16]

I'll get rid of the closeAllTabs(boolean allowDelegation) and refactor the
classes that used it. I think we should leave closeAllTabs() for now, and look
into creating a utility method and refactoring in a separate CL since that
change will touch a lot code.

+
+    /**
      * @return Whether or not this model supports pending closures.
      */
     public boolean supportsPendingClosures();