Battery Status API: add testing support for LayoutTests.

content/public/test/layouttest_support.h

 // 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.
 
 #ifndef CONTENT_PUBLIC_TEST_LAYOUTTEST_SUPPORT_H_
 #define CONTENT_PUBLIC_TEST_LAYOUTTEST_SUPPORT_H_
 
 #include <string>
 #include <vector>
 
 #include "base/callback_forward.h"
 #include "third_party/WebKit/public/platform/WebScreenOrientationType.h"
 
 namespace blink {
+class WebBatteryStatus;
 class WebDeviceMotionData;
 class WebDeviceOrientationData;
 class WebGamepad;
 class WebGamepads;
 struct WebSize;
 }
 
 namespace content {
 
 class PageState;
@@ skipping 35 matching lines @@
 void SetMockDeviceOrientationData(const blink::WebDeviceOrientationData& data);
 
 // Sets WebScreenOrientationType that should be used as a mock orientation.
 void SetMockScreenOrientation(
     RenderView* render_view,
     const blink::WebScreenOrientationType& orientation);
 
 // Resets the mock screen orientation data.
 void ResetMockScreenOrientation();
 
+// Notifies blink that battery status has changed.
+void MockBatteryStatusChanged(const blink::WebBatteryStatus& status);
+
 // Returns the length of the local session history of a render view.
 int GetLocalSessionHistoryLength(RenderView* render_view);
 
 // Sync the current session history to the browser process.
 void SyncNavigationState(RenderView* render_view);
 
 // Sets the focus of the render view depending on |enable|. This only overrides
 // the state of the renderer, and does not sync the focus to the browser
 // process.
 void SetFocusAndActivate(RenderView* render_view, bool enable);
@@ skipping 25 matching lines @@
 // Forces the |render_frame| to use mock media streams.
 void UseMockMediaStreams(RenderFrame* render_frame);
 
 // Provides a text dump of the contents of the given page state.
 std::string DumpBackForwardList(std::vector<PageState>& page_state,
                                 size_t current_index);
 
 }  // namespace content
 
 #endif  // CONTENT_PUBLIC_TEST_LAYOUTTEST_SUPPORT_H_