Change how the quota system computes the total poolsize for temporary storage

base/time/time.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.
 
 // Time represents an absolute point in coordinated universal time (UTC),
 // internally represented as microseconds (s/1,000,000) since the Windows epoch
 // (1601-01-01 00:00:00 UTC). System-dependent clock interface routines are
 // defined in time_PLATFORM.cc. Note that values for Time may skew and jump
 // around as the operating system makes adjustments to synchronize (e.g., with
 // NTP servers). Thus, client code that uses the Time class must account for
@@ skipping 110 matching lines @@
 
   // Converts an integer value representing TimeDelta to a class. This is used
   // when deserializing a |TimeDelta| structure, using a value known to be
   // compatible. It is not provided as a constructor because the integer type
   // may be unclear from the perspective of a caller.
   static TimeDelta FromInternalValue(int64_t delta) { return TimeDelta(delta); }
 
   // Returns the maximum time delta, which should be greater than any reasonable
   // time delta we might compare it to. Adding or subtracting the maximum time
   // delta to a time or another time delta has an undefined result.
-  static TimeDelta Max();
+  static constexpr TimeDelta Max();
 
   // Returns the internal numeric value of the TimeDelta object. Please don't
   // use this and do arithmetic on it, as it is more error prone than using the
   // provided operators.
   // For serializing, use FromInternalValue to reconstitute.
   int64_t ToInternalValue() const { return delta_; }
 
   // Returns the magnitude (absolute value) of this TimeDelta.
   TimeDelta magnitude() const {
     // Some toolchains provide an incomplete C++11 implementation and lack an
@@ skipping 508 matching lines @@
 constexpr TimeDelta TimeDelta::FromMillisecondsD(double ms) {
   return FromDouble(ms * Time::kMicrosecondsPerMillisecond);
 }
 
 // static
 constexpr TimeDelta TimeDelta::FromMicroseconds(int64_t us) {
   return TimeDelta(us);
 }
 
 // static
+constexpr TimeDelta TimeDelta::Max() {
+  return TimeDelta(std::numeric_limits<int64_t>::max());
+}
+
+// static
 constexpr TimeDelta TimeDelta::FromDouble(double value) {
   // TODO(crbug.com/612601): Use saturated_cast<int64_t>(value) once we sort out
   // the Min() behavior.
   return value > std::numeric_limits<int64_t>::max()
              ? Max()
              : value < -std::numeric_limits<int64_t>::max()
                    ? -Max()
                    : TimeDelta(static_cast<int64_t>(value));
 }
 
@@ skipping 163 matching lines @@
   static void WaitUntilInitializedWin();
 #endif
 };
 
 // For logging use only.
 BASE_EXPORT std::ostream& operator<<(std::ostream& os, ThreadTicks time_ticks);
 
 }  // namespace base
 
 #endif  // BASE_TIME_TIME_H_