Provision to start base::SimpleTestTickClock at initial ticks

chrome/browser/chromeos/accessibility/touch_exploration_controller_browsertest.cc

 // Copyright 2014 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 "ui/chromeos/touch_exploration_controller.h"
 
 #include "ash/accessibility_delegate.h"
 #include "ash/shell.h"
 #include "ash/test/ash_test_base.h"
 #include "base/macros.h"
@@ skipping 10 matching lines @@
 #include "ui/compositor/test/draw_waiter_for_test.h"
 #include "ui/events/event.h"
 #include "ui/events/event_utils.h"
 #include "ui/events/test/event_generator.h"
 #include "ui/events/test/test_event_handler.h"
 
 namespace ui {
 
 class TouchExplorationTest : public InProcessBrowserTest {
  public:
-  TouchExplorationTest() : simulated_clock_(new base::SimpleTestTickClock()) {
-    // Tests fail if time is ever 0.
-    simulated_clock_->Advance(base::TimeDelta::FromMilliseconds(10));
-  }
+  TouchExplorationTest()
+      :  // Tests fail if time is ever 0.
+        simulated_clock_(new base::SimpleTestTickClock(
+            base::TimeTicks() + base::TimeDelta::FromMilliseconds(10))) {}
   ~TouchExplorationTest() override {}
 
  protected:
   void SetUpOnMainThread() override {
     // The RenderView for WebContents is created as a result of the
     // navigation to the New Tab page which is done as part of the test
     // SetUp. The creation involves sending a resize message to the renderer
     // process. Here we wait for the resize ack to be received, because
     // currently WindowEventDispatcher has code to hold touch and mouse
     // move events until resize is complete (crbug.com/384342) which
@@ skipping 200 matching lines @@
 
   // Continuing to move the touch exploration finger should send more mouse
   // events.
   generator.MoveTouchId(gfx::Point(509, 609), 1);
   EXPECT_EQ(0, event_handler_->num_touch_events());
   EXPECT_TRUE(cursor_client->IsMouseEventsEnabled());
   EXPECT_FALSE(cursor_client->IsCursorVisible());
 }
 
 }  // namespace ui