Refactor the INSTALL_SHORTCUT broadcast code into ChromeShortcutManager

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

Index: chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java b/chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java
index 17120e871caffbdcfa4cbda7b11184ede7e02aff..f4be47b1d14276304c23a74c1a55902aad9bfd8c 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/ChromeApplication.java
@@ -59,6 +59,7 @@ import org.chromium.chrome.browser.tabmodel.document.ActivityDelegateImpl;
 import org.chromium.chrome.browser.tabmodel.document.DocumentTabModelSelector;
 import org.chromium.chrome.browser.tabmodel.document.StorageDelegate;
 import org.chromium.chrome.browser.tabmodel.document.TabDelegate;
+import org.chromium.chrome.browser.webapps.ChromeShortcutManager;
 import org.chromium.chrome.browser.webapps.GooglePlayWebApkInstallDelegate;
 import org.chromium.components.signin.AccountManagerDelegate;
 import org.chromium.components.signin.SystemAccountManagerDelegate;
@@ -396,6 +397,11 @@ public class ChromeApplication extends ContentApplication {
         return null;
     }
 
+    /** Returns the singleton instance of ChromeShortcutManager */
+    public ChromeShortcutManager createChromeShortcutManager() {
+        return new ChromeShortcutManager();
+    }
+
     /**
      * Returns the singleton instance of the DocumentTabModelSelector.
      * TODO(dfalcantara): Find a better place for this once we differentiate between activity and