Remove support for Javascript warnings in the VM.

runtime/vm/exceptions.cc

 // Copyright (c) 2011, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/exceptions.h"
 
 #include "platform/address_sanitizer.h"
 
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
@@ skipping 617 matching lines @@
       class_name = &Symbols::UnsupportedError();
       break;
     case kNullThrown:
       library = Library::CoreLibrary();
       class_name = &Symbols::NullThrownError();
       break;
     case kIsolateSpawn:
       library = Library::IsolateLibrary();
       class_name = &Symbols::IsolateSpawnException();
       break;
-    case kJavascriptIntegerOverflowError:
-      library = Library::CoreLibrary();
-      class_name = &Symbols::JavascriptIntegerOverflowError();
-      break;
-    case kJavascriptCompatibilityError:
-      library = Library::CoreLibrary();
-      class_name = &Symbols::JavascriptCompatibilityError();
-      break;
     case kAssertion:
       library = Library::CoreLibrary();
       class_name = &Symbols::AssertionError();
       constructor_name = &Symbols::DotCreate();
       break;
     case kCast:
       library = Library::CoreLibrary();
       class_name = &Symbols::CastError();
       constructor_name = &Symbols::DotCreate();
       break;
@@ skipping 17 matching lines @@
       class_name = &Symbols::CyclicInitializationError();
   }
 
   return DartLibraryCalls::InstanceCreate(library,
                                           *class_name,
                                           *constructor_name,
                                           arguments);
 }
 
 
-// Throw JavascriptCompatibilityError exception.
-void Exceptions::ThrowJavascriptCompatibilityError(const char* msg) {
-  const Array& exc_args = Array::Handle(Array::New(1));
-  const String& msg_str = String::Handle(String::New(msg));
-  exc_args.SetAt(0, msg_str);
-  Exceptions::ThrowByType(Exceptions::kJavascriptCompatibilityError, exc_args);
-}
-
-
 static bool IsLikelyInternalDart2JSCrash(const Stacktrace& stacktrace) {
   Function& function = Function::Handle();
   String& name = String::Handle();
   for (intptr_t i = 0, len = stacktrace.Length(); i < len; i++) {
     function = stacktrace.FunctionAtFrame(i);
     name = function.QualifiedPrettyName();
     if (name.Equals("_CompilerDiagnosticReporter.withCurrentElement")) {
       return true;
     }
   }
   return false;
 }
 
 
 void Exceptions::PrintStackTraceAndAbort(const char* reason) {
   const Stacktrace& stacktrace = Stacktrace::Handle(CurrentStacktrace());
   if (!IsLikelyInternalDart2JSCrash(stacktrace)) {
     return;
   }
 
   OS::PrintErr("\n\n\nAborting due to %s. Stacktrace:\n%s\n",
                reason,
                stacktrace.ToCString());
   OS::Abort();
 }
 
 }  // namespace dart