Add LowMemoryNotification to the API on Android platform....

src/api.cc

Index: src/api.cc
===================================================================
--- src/api.cc	(revision 2724)
+++ src/api.cc	(working copy)
@@ -2604,10 +2604,18 @@
 }
 
 
-void  v8::V8::IdleNotification(bool is_high_priority) {
+void v8::V8::IdleNotification(bool is_high_priority) {
   i::V8::IdleNotification(is_high_priority);
 }
 
+
+void v8::V8::LowMemoryNotification() {
+#if defined(ANDROID)
+  i::Heap::CollectAllGarbage(true);
+#endif
+}
+
+
 const char* v8::V8::GetVersion() {
   static v8::internal::EmbeddedVector<char, 128> buffer;
   v8::internal::Version::GetString(buffer);