Android: Add chrome-specific dynamic linker.

base/android/sys_utils.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 "base/android/sys_utils.h"
 
+#include "base/android/sys_utils_constants.h"
 #include "base/sys_info.h"
 #include "jni/SysUtils_jni.h"
 
-const int64 kLowEndMemoryThreshold = 1024 * 1024 * 512; // 512 mb.
-
 // Defined and called by JNI
 static jboolean IsLowEndDevice(JNIEnv* env, jclass clazz) {
   return base::android::SysUtils::IsLowEndDevice();
 }
 
 namespace base {
 namespace android {
 
-bool SysUtils::Register(JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
+const int64 kLowEndMemoryThreshold =
+    BASE_ANDROID_LOW_END_MEMORY_THRESHOLD_MB * 1024 * 1024;
+
+bool SysUtils::Register(JNIEnv* env) { return RegisterNativesImpl(env); }
 
 bool SysUtils::IsLowEndDevice() {
   return SysInfo::AmountOfPhysicalMemory() <= kLowEndMemoryThreshold;
 }
 
 SysUtils::SysUtils() { }
 
 }  // namespace android
 }  // namespace base