MediaCaptureFromElement: add content_browsertests

content/browser/media/webrtc/webrtc_canvas_capture_browsertest.cc

-// Copyright 2016 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/command_line.h"
-#include "base/macros.h"
-#include "build/build_config.h"
-#include "content/public/test/browser_test_utils.h"
-#include "content/public/test/content_browser_test_utils.h"
-#include "content/test/webrtc_content_browsertest_base.h"
-
-namespace {
-
-static const char kCanvasTestHtmlPage[] = "/media/canvas_capture_color.html";
-
-}  // namespace
-
-namespace content {
-
-// This class tests the rgba color values produced by canvas capture.
-class WebRtcCanvasCaptureTest : public WebRtcContentBrowserTest {
- public:
-  WebRtcCanvasCaptureTest() {}
-  ~WebRtcCanvasCaptureTest() override {}
-
- private:
-  DISALLOW_COPY_AND_ASSIGN(WebRtcCanvasCaptureTest);
-};
-
-IN_PROC_BROWSER_TEST_F(WebRtcCanvasCaptureTest,
-    VerifyCanvasCaptureColor) {
-  MakeTypicalCall("testCanvasCaptureColors();", kCanvasTestHtmlPage);
-}
-
-}  // namespace content