Compress sources of JS libraries in addition to the snapshot.

src/serialize.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 999 matching lines @@
         int space = source_->Get();
         pages_[space].Add(last_object_address_);
         if (space == CODE_SPACE) {
           CPU::FlushICache(last_object_address_, Page::kPageSize);
         }
         break;
       }
 
       case kNativesStringResource: {
         int index = source_->Get();
-        Vector<const char> source_vector = Natives::GetScriptSource(index);
+        Vector<const char> source_vector = Natives::GetRawScriptSource(index);
         NativesExternalStringResource* resource =
-            new NativesExternalStringResource(
-                isolate->bootstrapper(), source_vector.start());
+            new NativesExternalStringResource(isolate->bootstrapper(),
+                                              source_vector.start(),
+                                              source_vector.length());
         *current++ = reinterpret_cast<Object*>(resource);
         break;
       }
 
       case kSynchronize: {
         // If we get here then that indicates that you have a mismatch between
         // the number of GC roots when serializing and deserializing.
         UNREACHABLE();
       }
 
@@ skipping 531 matching lines @@
       fullness_[space] = RoundUp(fullness_[space], Page::kPageSize);
     }
   }
   int allocation_address = fullness_[space];
   fullness_[space] = allocation_address + size;
   return allocation_address;
 }
 
 
 } }  // namespace v8::internal