Remove some ascii checks in advance of latin-1 release

BUG=

Review URL: https://chromiumcodereview.appspot.com/11880017
Patch from Dan Carney <dcarney@google.com>.

git-svn-id: http://v8.googlecode.com/svn/branches/bleeding_edge@13399 ce2b1a6d-e550-0410-aec6-3dcde31c8c00

src/heap-inl.h

@@ -633,20 +633,24 @@ void ExternalStringTable::Verify() {
     // TODO(yangguo): check that the object is indeed an external string.
     ASSERT(heap_->InNewSpace(obj));
     ASSERT(obj != HEAP->the_hole_value());
+#ifndef ENABLE_LATIN_1
     if (obj->IsExternalAsciiString()) {
       ExternalAsciiString* string = ExternalAsciiString::cast(obj);
       ASSERT(String::IsAscii(string->GetChars(), string->length()));
     }
+#endif
   }
   for (int i = 0; i < old_space_strings_.length(); ++i) {
     Object* obj = Object::cast(old_space_strings_[i]);
     // TODO(yangguo): check that the object is indeed an external string.
     ASSERT(!heap_->InNewSpace(obj));
     ASSERT(obj != HEAP->the_hole_value());
+#ifndef ENABLE_LATIN_1
     if (obj->IsExternalAsciiString()) {
       ExternalAsciiString* string = ExternalAsciiString::cast(obj);
       ASSERT(String::IsAscii(string->GetChars(), string->length()));
     }
+#endif
   }
 #endif
 }

src/liveobjectlist.cc

@@ -2025,7 +2025,6 @@ Object* LiveObjectList::PrintObj(int obj_id) {
   MemoryMappedExternalResource* resource =
       new MemoryMappedExternalResource(temp_filename.start(), true);
   if (resource->exists() && !resource->is_empty()) {
-    ASSERT(resource->IsAscii());
     Handle<String> dump_string =
         factory->NewExternalStringFromAscii(resource);
     heap->external_string_table()->AddString(*dump_string);
@@ -2232,7 +2231,6 @@ Object* LiveObjectList::GetPathPrivate(HeapObject* obj1, HeapObject* obj2) {
   MemoryMappedExternalResource* resource =
       new MemoryMappedExternalResource(temp_filename.start(), true);
   if (resource->exists() && !resource->is_empty()) {
-    ASSERT(resource->IsAscii());
     Handle<String> path_string =
         factory->NewExternalStringFromAscii(resource);
     heap->external_string_table()->AddString(*path_string);

src/v8utils.cc

@@ -315,55 +315,4 @@ void MemoryMappedExternalResource::Init(const char* filename) {
   }
 }
 
-
-bool MemoryMappedExternalResource::EnsureIsAscii(bool abort_if_failed) const {
-  bool is_ascii = true;
-
-  int line_no = 1;
-  const char* start_of_line = data_;
-  const char* end = data_ + length_;
-  for (const char* p = data_; p < end; p++) {
-    char c = *p;
-    if ((c & 0x80) != 0) {
-      // Non-ASCII detected:
-      is_ascii = false;
-
-      // Report the error and abort if appropriate:
-      if (abort_if_failed) {
-        int char_no = static_cast<int>(p - start_of_line) - 1;
-
-        ASSERT(filename_ != NULL);
-        PrintF("\n\n\n"
-               "Abort: Non-Ascii character 0x%.2x in file %s line %d char %d",
-               c, filename_, line_no, char_no);
-
-        // Allow for some context up to kNumberOfLeadingContextChars chars
-        // before the offending non-ASCII char to help the user see where
-        // the offending char is.
-        const int kNumberOfLeadingContextChars = 10;
-        const char* err_context = p - kNumberOfLeadingContextChars;
-        if (err_context < data_) {
-          err_context = data_;
-        }
-        // Compute the length of the error context and print it.
-        int err_context_length = static_cast<int>(p - err_context);
-        if (err_context_length != 0) {
-          PrintF(" after \"%.*s\"", err_context_length, err_context);
-        }
-        PrintF(".\n\n\n");
-        OS::Abort();
-      }
-
-      break;  // Non-ASCII detected.  No need to continue scanning.
-    }
-    if (c == '\n') {
-      start_of_line = p;
-      line_no++;
-    }
-  }
-
-  return is_ascii;
-}
-
-
 } }  // namespace v8::internal

src/v8utils.h

@@ -280,10 +280,6 @@ class MemoryMappedExternalResource: public
   bool exists() const { return file_ != NULL; }
   bool is_empty() const { return length_ == 0; }
 
-  bool EnsureIsAscii(bool abort_if_failed) const;
-  bool EnsureIsAscii() const { return EnsureIsAscii(true); }
-  bool IsAscii() const { return EnsureIsAscii(false); }
-
  private:
   void Init(const char* filename);