Refactors DeviceOrientation to make it more extensible

content/browser/device_orientation/data_fetcher_impl_android.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 "content/browser/device_orientation/data_fetcher_impl_android.h"
 
 #include "base/android/jni_android.h"
 #include "base/android/scoped_java_ref.h"
 #include "base/lazy_instance.h"
 #include "base/logging.h"
+#include "content/browser/device_orientation/device_data.h"
 #include "content/browser/device_orientation/orientation.h"
 #include "jni/device_orientation_jni.h"
 
 using base::android::AttachCurrentThread;
 using base::android::CheckException;
 using base::android::GetClass;
 using base::android::GetMethodID;
 using base::android::ScopedJavaGlobalRef;
 using base::android::ScopedJavaLocalRef;
 
@@ skipping 26 matching lines @@
     return fetcher.release();
 
   LOG(ERROR) << "DataFetcherImplAndroid::Start failed!";
   return NULL;
 }
 
 DataFetcherImplAndroid::~DataFetcherImplAndroid() {
   Stop();
 }
 
+bool DataFetcherImplAndroid::GetDeviceData(DeviceData* device_data) {
+  switch (device_data->device_data_type()) {
+    case DeviceData::kDeviceOrientationData:
+      return GetOrientation(static_cast<Orientation*>(device_data));
+    default:
+      return false;
+  }
+}
+
 bool DataFetcherImplAndroid::GetOrientation(Orientation* orientation) {
   // Do we have a new orientation value? (It's safe to do this outside the lock
   // because we only skip the lock if the value is null. We always enter the
   // lock if we're going to make use of the new value.)
   if (next_orientation_.get()) {
     base::AutoLock autolock(next_orientation_lock_);
     next_orientation_.swap(current_orientation_);
   }
   if (current_orientation_.get())
     *orientation = *current_orientation_;
@@ skipping 19 matching lines @@
                                       reinterpret_cast<jint>(this),
                                       rate_in_milliseconds);
 }
 
 void DataFetcherImplAndroid::Stop() {
   DCHECK(!g_jni_obj.Get().is_null());
   Java_DeviceOrientation_stop(AttachCurrentThread(), g_jni_obj.Get().obj());
 }
 
 }  // namespace device_orientation