Use correct favicon scale factor on Android.

ui/gfx/android/device_display_info.cc

+// Copyright (c) 2012 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/gfx/android/device_display_info.h"
+
+#include "base/android/jni_android.h"
+#include "base/android/jni_string.h"
+#include "base/logging.h"
+#include "jni/DeviceDisplayInfo_jni.h"
+
+using base::android::AttachCurrentThread;
+using base::android::ScopedJavaLocalRef;
+
+namespace gfx {
+
+DeviceDisplayInfo::DeviceDisplayInfo() {
+  JNIEnv* env = AttachCurrentThread();
+  j_device_info_.Reset(Java_DeviceDisplayInfo_create(env,
+      base::android::GetApplicationContext()));
+}
+
+DeviceDisplayInfo::~DeviceDisplayInfo() {
+}
+
+int DeviceDisplayInfo::GetDisplayHeight() {
+  JNIEnv* env = AttachCurrentThread();
+  jint result =
+      Java_DeviceDisplayInfo_getDisplayHeight(env, j_device_info_.obj());
+  return static_cast<int>(result);
+}
+
+int DeviceDisplayInfo::GetDisplayWidth() {
+  JNIEnv* env = AttachCurrentThread();
+  jint result =
+      Java_DeviceDisplayInfo_getDisplayWidth(env, j_device_info_.obj());
+  return static_cast<int>(result);
+}
+
+int DeviceDisplayInfo::GetBitsPerPixel() {
+  JNIEnv* env = AttachCurrentThread();
+  jint result =
+      Java_DeviceDisplayInfo_getBitsPerPixel(env, j_device_info_.obj());
+  return static_cast<int>(result);
+}
+
+int DeviceDisplayInfo::GetBitsPerComponent() {
+  JNIEnv* env = AttachCurrentThread();
+  jint result =
+      Java_DeviceDisplayInfo_getBitsPerComponent(env, j_device_info_.obj());
+  return static_cast<int>(result);
+}
+
+double DeviceDisplayInfo::GetDIPScale() {
+  JNIEnv* env = AttachCurrentThread();
+  jdouble result =
+      Java_DeviceDisplayInfo_getDIPScale(env, j_device_info_.obj());
+  return static_cast<double>(result);
+}
+
+double DeviceDisplayInfo::GetRefreshRate() {
+  JNIEnv* env = AttachCurrentThread();
+  jdouble result =
+      Java_DeviceDisplayInfo_getRefreshRate(env, j_device_info_.obj());
+  return static_cast<double>(result);
+}
+
+// static
+bool DeviceDisplayInfo::RegisterDeviceDisplayInfo(JNIEnv* env) {
+  return RegisterNativesImpl(env);
+}
+
+}  // namespace gfx