Clear analyzer warning on Observatory

runtime/observatory/lib/src/sample_profile/sample_profile.dart

 // Copyright (c) 2015, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
-part of cpu_profiler;
+part of sample_profiler;
 
 abstract class CallTreeNode<NodeT extends M.CallTreeNode>
     implements M.CallTreeNode {
   final List<NodeT> children;
   final int count;
   final int inclusiveNativeAllocations;
   final int exclusiveNativeAllocations;
   double get percentage => _percentage;
   double _percentage = 0.0;
   final Set<String> attributes = new Set<String>();
@@ skipping 437 matching lines @@
 class InlineIntervalTick {
   final int startAddress;
   int _inclusiveTicks = 0;
   int get inclusiveTicks => _inclusiveTicks;
   int _exclusiveTicks = 0;
   int get exclusiveTicks => _exclusiveTicks;
   InlineIntervalTick(this.startAddress);
 }
 
 class ProfileCode implements M.ProfileCode {
-  final CpuProfile profile;
+  final SampleProfile profile;
   final Code code;
   int exclusiveTicks;
   int inclusiveTicks;
   int exclusiveNativeAllocations;
   int inclusiveNativeAllocations;
   double normalizedExclusiveTicks = 0.0;
   double normalizedInclusiveTicks = 0.0;
   final addressTicks = new Map<int, CodeTick>();
   final intervalTicks = new Map<int, InlineIntervalTick>();
   String formattedInclusiveTicks = '';
@@ skipping 107 matching lines @@
   _recordCallee(ProfileCode callee, int count) {
     var r = callees[callee];
     if (r == null) {
       r = 0;
     }
     callees[callee] = r + count;
   }
 }
 
 class ProfileFunction implements M.ProfileFunction {
-  final CpuProfile profile;
+  final SampleProfile profile;
   final ServiceFunction function;
   // List of compiled code objects containing this function.
   final List<ProfileCode> profileCodes = new List<ProfileCode>();
   final Map<ProfileFunction, int> callers = new Map<ProfileFunction, int>();
   final Map<ProfileFunction, int> callees = new Map<ProfileFunction, int>();
 
   // Absolute ticks:
   int exclusiveTicks = 0;
   int inclusiveTicks = 0;
 
@@ skipping 138 matching lines @@
 
   _recordCallee(ProfileFunction callee, int count) {
     var r = callees[callee];
     if (r == null) {
       r = 0;
     }
     callees[callee] = r + count;
   }
 }
 
-// TODO(johnmccutchan): Rename to SampleProfile
-class CpuProfile extends M.SampleProfile {
+class SampleProfile extends M.SampleProfile {
   Isolate isolate;
 
   int sampleCount = 0;
   int samplePeriod = 0;
   double sampleRate = 0.0;
 
   int stackDepth = 0;
 
   double timeSpan = 0.0;
 
@@ skipping 319 matching lines @@
   }
 
   int approximateMillisecondsForCount(count) {
     return (count * samplePeriod) ~/ Duration.MICROSECONDS_PER_MILLISECOND;
   }
 
   double approximateSecondsForCount(count) {
     return (count * samplePeriod) / Duration.MICROSECONDS_PER_SECOND;
   }
 }