fix(input): do not hold input for comopsition on android

Workaround for chrome for android until angular#2129 is ready.

Closes angular#5308, angular#5323

Author: clkao

src/ng/directive/input.js

@@ -395,15 +395,17 @@ function textInputType(scope, element, attr, ctrl, $sniffer, $browser) {
   // In composition mode, users are still inputing intermediate text buffer,
   // hold the listener until composition is done.
   // More about composition events: https://developer.mozilla.org/en-US/docs/Web/API/CompositionEvent
-  var composing = false;
+  if (!$sniffer.android) {
+    var composing = false;
 
-  element.on('compositionstart', function() {
-    composing = true;
-  });
+    element.on('compositionstart', function(data) {
+      composing = true;
+    });
 
-  element.on('compositionend', function() {
-    composing = false;
-  });
+    element.on('compositionend', function() {
+      composing = false;
+    });
+  }
 
   var listener = function() {
     if (composing) return;