Avoid crash in browser in systems with no search provider

If there's no activity registered for the intent (action)
ACTION_WEB_SEARCH the browser will crash if a search
query is entered in the browser. The crash is avoided
by catching the ActivityNotFoundException.

Change-Id: I021d3210654bb3aa08ccdd15abea86ef415282b1
diff --git a/src/com/android/browser/BrowserActivity.java b/src/com/android/browser/BrowserActivity.java
index 5e55789..29e333a 100644
--- a/src/com/android/browser/BrowserActivity.java
+++ b/src/com/android/browser/BrowserActivity.java
@@ -629,7 +629,13 @@
             intent.putExtra(SearchManager.EXTRA_DATA_KEY, extraData);
         }
         intent.putExtra(Browser.EXTRA_APPLICATION_ID, getPackageName());
-        startActivity(intent);
+
+        // can't be sure there is an activity for the Intent
+        try {
+            startActivity(intent);
+        } catch (ActivityNotFoundException ex) {
+            return false;
+        }
 
         return true;
     }