base: Add ScopedJavaLocalFrame class.

ui/gl/android/surface_texture.cc

 // Copyright 2013 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 "ui/gl/android/surface_texture.h"
 
 #include <android/native_window_jni.h>
 
 // TODO(boliu): Remove this include when we move off ICS.
 #include "base/android/build_info.h"
@@ skipping 105 matching lines @@
   if (GlContextMethodsAvailable()) {
     JNIEnv* env = base::android::AttachCurrentThread();
     Java_SurfaceTexturePlatformWrapper_detachFromGLContext(
         env, j_surface_texture_.obj());
   }
 }
 
 ANativeWindow* SurfaceTexture::CreateSurface() {
   JNIEnv* env = base::android::AttachCurrentThread();
   ScopedJavaSurface surface(this);
+  // Note: This ensures that any local references used by
+  // ANativeWindow_fromSurface are released immediately. This is needed as a
+  // workaround for https://code.google.com/p/android/issues/detail?id=68174
+  base::android::ScopedJavaLocalFrame scoped_local_reference_frame(env);
   ANativeWindow* native_window = ANativeWindow_fromSurface(
       env, surface.j_surface().obj());
   return native_window;
 }
 
 // static
 bool SurfaceTexture::IsSingleBufferModeSupported() {
   return base::android::BuildInfo::GetInstance()->sdk_int() >= 19;
 }
 
 bool SurfaceTexture::RegisterSurfaceTexture(JNIEnv* env) {
   return RegisterNativesImpl(env);
 }
 
 }  // namespace gfx