Battery Status API: add testing support for LayoutTests.

content/renderer/renderer_webkitplatformsupport_impl.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/renderer/renderer_webkitplatformsupport_impl.h"
 
 #include "base/command_line.h"
 #include "base/files/file_path.h"
 #include "base/lazy_instance.h"
 #include "base/memory/shared_memory.h"
@@ skipping 20 matching lines @@
 #include "content/common/gpu/client/gpu_channel_host.h"
 #include "content/common/gpu/client/webgraphicscontext3d_command_buffer_impl.h"
 #include "content/common/gpu/gpu_process_launch_causes.h"
 #include "content/common/mime_registry_messages.h"
 #include "content/common/screen_orientation_messages.h"
 #include "content/common/view_messages.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/common/webplugininfo.h"
 #include "content/public/renderer/content_renderer_client.h"
 #include "content/renderer/battery_status/battery_status_dispatcher.h"
+#include "content/renderer/battery_status/fake_battery_status_dispatcher.h"
 #include "content/renderer/device_sensors/device_motion_event_pump.h"
 #include "content/renderer/device_sensors/device_orientation_event_pump.h"
 #include "content/renderer/dom_storage/webstoragenamespace_impl.h"
 #include "content/renderer/gamepad_shared_memory_reader.h"
 #include "content/renderer/media/audio_decoder.h"
 #include "content/renderer/media/crypto/key_systems.h"
 #include "content/renderer/media/renderer_webaudiodevice_impl.h"
 #include "content/renderer/media/renderer_webmidiaccessor_impl.h"
 #include "content/renderer/media/webcontentdecryptionmodule_impl.h"
 #include "content/renderer/media/webrtc/peer_connection_dependency_factory.h"
@@ skipping 93 matching lines @@
 static bool g_sandbox_enabled = true;
 static blink::WebGamepadListener* web_gamepad_listener = NULL;
 base::LazyInstance<WebGamepads>::Leaky g_test_gamepads =
     LAZY_INSTANCE_INITIALIZER;
 base::LazyInstance<blink::WebDeviceMotionData>::Leaky
     g_test_device_motion_data = LAZY_INSTANCE_INITIALIZER;
 base::LazyInstance<blink::WebDeviceOrientationData>::Leaky
     g_test_device_orientation_data = LAZY_INSTANCE_INITIALIZER;
 base::LazyInstance<MockScreenOrientationController>::Leaky
     g_test_screen_orientation_controller = LAZY_INSTANCE_INITIALIZER;
+base::LazyInstance<FakeBatteryStatusDispatcher>::Leaky
+    g_test_battery_status_dispatcher = LAZY_INSTANCE_INITIALIZER;
 
 } // namespace
 
 //------------------------------------------------------------------------------
 
 class RendererWebKitPlatformSupportImpl::MimeRegistry
     : public SimpleWebMimeRegistryImpl {
  public:
   virtual blink::WebMimeRegistry::SupportsType supportsMediaMIMEType(
       const blink::WebString& mime_type,
@@ skipping 1018 matching lines @@
       quota_message_filter_.get())->QueryStorageUsageAndQuota(
           storage_partition,
           static_cast<quota::StorageType>(type),
           QuotaDispatcher::CreateWebStorageQuotaCallbacksWrapper(callbacks));
 }
 
 //------------------------------------------------------------------------------
 
 void RendererWebKitPlatformSupportImpl::setBatteryStatusListener(
     blink::WebBatteryStatusListener* listener) {
+  if (RenderThreadImpl::current() &&
+      RenderThreadImpl::current()->layout_test_mode()) {
+    // If we are in test mode, we want to use a fake battery status dispatcher,
+    // which does not communicate with the browser process. Battery status
+    // changes are signalled by invoking MockBatteryStatusChangedForTesting().
+    g_test_battery_status_dispatcher.Get().SetListener(listener);
+    return;
+  }
+
   if (!battery_status_dispatcher_) {
     battery_status_dispatcher_.reset(
         new BatteryStatusDispatcher(RenderThreadImpl::current()));
   }
   battery_status_dispatcher_->SetListener(listener);
 }
 
+// static
+void RendererWebKitPlatformSupportImpl::MockBatteryStatusChangedForTesting(
+    const blink::WebBatteryStatus& status) {
+  g_test_battery_status_dispatcher.Get().PostBatteryStatusChange(status);
+}
+
 }  // namespace content