Upstream ChromeShortcutManagerInternal using reflection.

chrome/android/java/src/org/chromium/chrome/browser/AppHooks.java

Index: chrome/android/java/src/org/chromium/chrome/browser/AppHooks.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/AppHooks.java b/chrome/android/java/src/org/chromium/chrome/browser/AppHooks.java
index 6740fdda86b06ef6e399dc93c7d3d34067ffd42d..642b8cac68ff65956839c2cba9b7cae768016342 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/AppHooks.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/AppHooks.java
@@ -115,6 +115,7 @@ public abstract class AppHooks {
     }
 
     /** Returns the singleton instance of ChromeShortcutManager */
+    // TODO(martiw): remove this function after ChromeShortcutManagerInternal is removed
     public ChromeShortcutManager createChromeShortcutManager() {
         return new ChromeShortcutManager();
     }