Blink Platform: Remove time functions from Platform.

third_party/WebKit/Source/wtf/CurrentTime.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 12 matching lines @@
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "wtf/CurrentTime.h"
 
+#include "base/time/time.h"
+
 namespace WTF {
 
-static TimeFunction currentTimeFunction;
-static TimeFunction monotonicallyIncreasingTimeFunction;
-
-void setCurrentTimeFunction(TimeFunction func)
-{
-    currentTimeFunction = func;
-}
-
-void setMonotonicallyIncreasingTimeFunction(TimeFunction func)
-{
-    monotonicallyIncreasingTimeFunction = func;
-}
+static TimeFunction mockTimeFunctionForTesting = nullptr;
 
 double currentTime()
 {
-    return (*currentTimeFunction)();
+    if (mockTimeFunctionForTesting)
+        return mockTimeFunctionForTesting();
+    return base::Time::Now().ToDoubleT();
 }
 
 double monotonicallyIncreasingTime()
 {
-    return (*monotonicallyIncreasingTimeFunction)();
+    if (mockTimeFunctionForTesting)
+        return mockTimeFunctionForTesting();
+    return base::TimeTicks::Now().ToInternalValue() / static_cast<double>(base::Time::kMicrosecondsPerSecond);
+}
+
+TimeFunction setTimeFunctionsForTesting(TimeFunction newFunction)
+{
+    TimeFunction oldFunction = mockTimeFunctionForTesting;
+    mockTimeFunctionForTesting = newFunction;
+    return oldFunction;
 }
 
 } // namespace WTF