Inline the TimeDelta::From* construction functions.

base/time.h

 // Copyright (c) 2006-2008 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 time, internally represented as
 // microseconds (s/1,000,000) since a platform-dependent epoch.  Each
 // platform's epoch, along with other system-dependent clock interface
 // routines, is defined in time_PLATFORM.cc.
 //
 // TimeDelta represents a duration of time, internally represented in
@@ skipping 324 matching lines @@
   static const int64 kTimeTToMicrosecondsOffset;
 
   // Time in microseconds in UTC.
   int64 us_;
 };
 
 inline Time TimeDelta::operator+(Time t) const {
   return Time(t.us_ + delta_);
 }
 
+// Inline the TimeDelta factory methods, for fast TimeDelta construction.
+
+// static
+inline TimeDelta TimeDelta::FromDays(int64 days) {
+  return TimeDelta(days * Time::kMicrosecondsPerDay);
+}
+
+// static
+inline TimeDelta TimeDelta::FromHours(int64 hours) {
+  return TimeDelta(hours * Time::kMicrosecondsPerHour);
+}
+
+// static
+inline TimeDelta TimeDelta::FromMinutes(int64 minutes) {
+  return TimeDelta(minutes * Time::kMicrosecondsPerMinute);
+}
+
+// static
+inline TimeDelta TimeDelta::FromSeconds(int64 secs) {
+  return TimeDelta(secs * Time::kMicrosecondsPerSecond);
+}
+
+// static
+inline TimeDelta TimeDelta::FromMilliseconds(int64 ms) {
+  return TimeDelta(ms * Time::kMicrosecondsPerMillisecond);
+}
+
+// static
+inline TimeDelta TimeDelta::FromMicroseconds(int64 us) {
+  return TimeDelta(us);
+}
+
 // TimeTicks ------------------------------------------------------------------
 
 class TimeTicks {
  public:
   TimeTicks() : ticks_(0) {
   }
 
   // Platform-dependent tick count representing "right now."
   // The resolution of this clock is ~1-15ms.  Resolution varies depending
   // on hardware/operating system configuration.
@@ skipping 81 matching lines @@
 #endif
 };
 
 inline TimeTicks TimeDelta::operator+(TimeTicks t) const {
   return TimeTicks(t.ticks_ + delta_);
 }
 
 }  // namespace base
 
 #endif  // BASE_TIME_H_