Revert 177087.

tools/telemetry/telemetry/inspector_page_unittest.py

Index: tools/telemetry/telemetry/inspector_page_unittest.py
===================================================================
--- tools/telemetry/telemetry/inspector_page_unittest.py	(revision 177224)
+++ tools/telemetry/telemetry/inspector_page_unittest.py	(working copy)
@@ -53,3 +53,25 @@
     self._tab.WaitForDocumentReadyStateToBeComplete()
     self._tab.runtime.Execute('document.cookie="foo=bar"')
     self.assertEquals(self._tab.page.GetCookieByName('foo'), 'bar')
+
+
+class GpuInspectorPageTest(tab_test_case.TabTestCase):
+  def setUp(self):
+    self._extra_browser_args = ['--enable-gpu-benchmarking']
+    super(GpuInspectorPageTest, self).setUp()
+
+  def testScreenshot(self):
+    unittest_data_dir = os.path.join(os.path.dirname(__file__),
+                                     '..', 'unittest_data')
+    self._browser.SetHTTPServerDirectory(unittest_data_dir)
+    self._tab.page.Navigate(
+      self._browser.http_server.UrlOf('green_rect.html'))
+    self._tab.WaitForDocumentReadyStateToBeComplete()
+
+    # Skip this test if running against a browser without screenshot support
+    if self._tab.page.screenshot_supported:
+      screenshot = self._tab.page.Screenshot(5)
+      assert screenshot
+      screenshot.GetPixelColor(0, 0).AssertIsRGB(0, 255, 0)
+      screenshot.GetPixelColor(31, 31).AssertIsRGB(0, 255, 0)
+      screenshot.GetPixelColor(32, 32).AssertIsRGB(255, 255, 255)