Prefix usage of kExternalFloatArray and kExternalDoubleArray with v8.

TBR=mstarzinger@chromium.org

Review URL: https://chromiumcodereview.appspot.com/9417002

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@10715 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

test/cctest/test-api.cc

@@ -12902,8 +12902,8 @@ static void ExternalArrayTestHelper(v8::ExternalArrayType array_type,
                       "}"
                       "ext_array[7];");
   CHECK_EQ(0, result->Int32Value());
-  if (array_type == kExternalDoubleArray ||
-      array_type == kExternalFloatArray) {
+  if (array_type == v8::kExternalDoubleArray ||
+      array_type == v8::kExternalFloatArray) {
     CHECK_EQ(
         static_cast<int>(0x80000000),
         static_cast<int>(jsobj->GetElement(7)->ToObjectChecked()->Number()));