Add a new rappor metric to record all package names excluding GSA

chrome/android/java/src/org/chromium/chrome/browser/gsa/GSAState.java

Index: chrome/android/java/src/org/chromium/chrome/browser/gsa/GSAState.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/gsa/GSAState.java b/chrome/android/java/src/org/chromium/chrome/browser/gsa/GSAState.java
index 38efc6cd40033ec1a79db9cd33ac741e4b65ab07..45eb973ed16ea1a78f04553798e20e9fe26d1e8e 100644
--- a/chrome/android/java/src/org/chromium/chrome/browser/gsa/GSAState.java
+++ b/chrome/android/java/src/org/chromium/chrome/browser/gsa/GSAState.java
@@ -62,6 +62,13 @@ public class GSAState {
         return sGSAState;
     }
 
+    /**
+     * @return Whether the given package name is the package name for Google Search App.
+     */
+    public static boolean isGsaPackageName(String packageName) {
+        return SEARCH_INTENT_PACKAGE.equals(packageName);
+    }
+
     /* Private constructor, since this is a singleton */
     private GSAState(Context context) {
         mContext = context.getApplicationContext();