diff --git a/extensions/extensions.gyp b/extensions/extensions.gyp
index 1e51f2d72da6ea..ee0a40ddb27f72 100644
--- a/extensions/extensions.gyp
+++ b/extensions/extensions.gyp
@@ -930,8 +930,8 @@
         'renderer/send_request_natives.h',
         'renderer/set_icon_natives.cc',
         'renderer/set_icon_natives.h',
-        'renderer/static_v8_external_ascii_string_resource.cc',
-        'renderer/static_v8_external_ascii_string_resource.h',
+        'renderer/static_v8_external_one_byte_string_resource.cc',
+        'renderer/static_v8_external_one_byte_string_resource.h',
         'renderer/test_features_native_handler.cc',
         'renderer/test_features_native_handler.h',
         'renderer/user_gestures_native_handler.cc',
diff --git a/extensions/renderer/BUILD.gn b/extensions/renderer/BUILD.gn
index 01577ea2bd2e6c..ded00cf0b5a5a0 100644
--- a/extensions/renderer/BUILD.gn
+++ b/extensions/renderer/BUILD.gn
@@ -132,8 +132,8 @@ source_set("renderer") {
     "send_request_natives.h",
     "set_icon_natives.cc",
     "set_icon_natives.h",
-    "static_v8_external_ascii_string_resource.cc",
-    "static_v8_external_ascii_string_resource.h",
+    "static_v8_external_one_byte_string_resource.cc",
+    "static_v8_external_one_byte_string_resource.h",
     "test_features_native_handler.cc",
     "test_features_native_handler.h",
     "user_gestures_native_handler.cc",
diff --git a/extensions/renderer/resource_bundle_source_map.cc b/extensions/renderer/resource_bundle_source_map.cc
index 954a6d73acb8c7..9b0a85adbbfb0b 100644
--- a/extensions/renderer/resource_bundle_source_map.cc
+++ b/extensions/renderer/resource_bundle_source_map.cc
@@ -38,10 +38,10 @@ bool ResourceBundleSourceMap::Contains(const std::string& name) {
 v8::Handle<v8::String> ResourceBundleSourceMap::ConvertString(
     v8::Isolate* isolate,
     const base::StringPiece& string) {
-  // v8 takes ownership of the StaticV8ExternalAsciiStringResource (see
+  // v8 takes ownership of the StaticV8ExternalOneByteStringResource (see
   // v8::String::NewExternal()).
   return v8::String::NewExternal(
-      isolate, new StaticV8ExternalAsciiStringResource(string));
+      isolate, new StaticV8ExternalOneByteStringResource(string));
 }
 
 }  // namespace extensions
diff --git a/extensions/renderer/resource_bundle_source_map.h b/extensions/renderer/resource_bundle_source_map.h
index 1e088cdd0031be..84a5411964ccf8 100644
--- a/extensions/renderer/resource_bundle_source_map.h
+++ b/extensions/renderer/resource_bundle_source_map.h
@@ -12,7 +12,7 @@
 #include "base/memory/linked_ptr.h"
 #include "base/strings/string_piece.h"
 #include "extensions/renderer/module_system.h"
-#include "extensions/renderer/static_v8_external_ascii_string_resource.h"
+#include "extensions/renderer/static_v8_external_one_byte_string_resource.h"
 #include "v8/include/v8.h"
 
 namespace ui {
diff --git a/extensions/renderer/static_v8_external_ascii_string_resource.cc b/extensions/renderer/static_v8_external_ascii_string_resource.cc
deleted file mode 100644
index 5d64d2ede4a685..00000000000000
--- a/extensions/renderer/static_v8_external_ascii_string_resource.cc
+++ /dev/null
@@ -1,25 +0,0 @@
-// Copyright 2014 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "extensions/renderer/static_v8_external_ascii_string_resource.h"
-
-namespace extensions {
-
-StaticV8ExternalAsciiStringResource::StaticV8ExternalAsciiStringResource(
-    const base::StringPiece& buffer)
-    : buffer_(buffer) {
-}
-
-StaticV8ExternalAsciiStringResource::~StaticV8ExternalAsciiStringResource() {
-}
-
-const char* StaticV8ExternalAsciiStringResource::data() const {
-  return buffer_.data();
-}
-
-size_t StaticV8ExternalAsciiStringResource::length() const {
-  return buffer_.length();
-}
-
-}  // namespace extensions
diff --git a/extensions/renderer/static_v8_external_one_byte_string_resource.cc b/extensions/renderer/static_v8_external_one_byte_string_resource.cc
new file mode 100644
index 00000000000000..3f54b5ddfb57df
--- /dev/null
+++ b/extensions/renderer/static_v8_external_one_byte_string_resource.cc
@@ -0,0 +1,26 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "extensions/renderer/static_v8_external_one_byte_string_resource.h"
+
+namespace extensions {
+
+StaticV8ExternalOneByteStringResource::StaticV8ExternalOneByteStringResource(
+    const base::StringPiece& buffer)
+    : buffer_(buffer) {
+}
+
+StaticV8ExternalOneByteStringResource::
+    ~StaticV8ExternalOneByteStringResource() {
+}
+
+const char* StaticV8ExternalOneByteStringResource::data() const {
+  return buffer_.data();
+}
+
+size_t StaticV8ExternalOneByteStringResource::length() const {
+  return buffer_.length();
+}
+
+}  // namespace extensions
diff --git a/extensions/renderer/static_v8_external_ascii_string_resource.h b/extensions/renderer/static_v8_external_one_byte_string_resource.h
similarity index 58%
rename from extensions/renderer/static_v8_external_ascii_string_resource.h
rename to extensions/renderer/static_v8_external_one_byte_string_resource.h
index 850f36d6d48ab8..97923b88fbe7ca 100644
--- a/extensions/renderer/static_v8_external_ascii_string_resource.h
+++ b/extensions/renderer/static_v8_external_one_byte_string_resource.h
@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#ifndef EXTENSIONS_RENDERER_STATIC_V8_EXTERNAL_ASCII_STRING_RESOURCE_H_
-#define EXTENSIONS_RENDERER_STATIC_V8_EXTERNAL_ASCII_STRING_RESOURCE_H_
+#ifndef EXTENSIONS_RENDERER_STATIC_V8_EXTERNAL_ONE_BYTE_STRING_RESOURCE_H_
+#define EXTENSIONS_RENDERER_STATIC_V8_EXTERNAL_ONE_BYTE_STRING_RESOURCE_H_
 
 #include "base/compiler_specific.h"
 #include "base/strings/string_piece.h"
@@ -14,11 +14,12 @@ namespace extensions {
 // A very simple implementation of v8::ExternalAsciiStringResource that just
 // wraps a buffer. The buffer must outlive the v8 runtime instance this resource
 // is used in.
-class StaticV8ExternalAsciiStringResource
-    : public v8::String::ExternalAsciiStringResource {
+class StaticV8ExternalOneByteStringResource
+    : public v8::String::ExternalOneByteStringResource {
  public:
-  explicit StaticV8ExternalAsciiStringResource(const base::StringPiece& buffer);
-  virtual ~StaticV8ExternalAsciiStringResource();
+  explicit StaticV8ExternalOneByteStringResource(
+      const base::StringPiece& buffer);
+  virtual ~StaticV8ExternalOneByteStringResource();
 
   virtual const char* data() const override;
   virtual size_t length() const override;
@@ -29,4 +30,4 @@ class StaticV8ExternalAsciiStringResource
 
 }  // namespace extensions
 
-#endif  // EXTENSIONS_RENDERER_STATIC_V8_EXTERNAL_ASCII_STRING_RESOURCE_H_
+#endif  // EXTENSIONS_RENDERER_STATIC_V8_EXTERNAL_ONE_BYTE_STRING_RESOURCE_H_
diff --git a/net/proxy/proxy_resolver_v8.cc b/net/proxy/proxy_resolver_v8.cc
index 26f3e718909463..dc224cdac2dfdf 100644
--- a/net/proxy/proxy_resolver_v8.cc
+++ b/net/proxy/proxy_resolver_v8.cc
@@ -107,7 +107,8 @@ class V8ExternalStringFromScriptData
 };
 
 // External string wrapper so V8 can access a string literal.
-class V8ExternalASCIILiteral : public v8::String::ExternalAsciiStringResource {
+class V8ExternalASCIILiteral
+    : public v8::String::ExternalOneByteStringResource {
  public:
   // |ascii| must be a NULL-terminated C string, and must remain valid
   // throughout this object's lifetime.