[base] Template MatchFun in TemplateHashMapImpl

src/libsampler/sampler.cc

 // Copyright 2016 the V8 project 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 "src/libsampler/sampler.h"
 
 #if V8_OS_POSIX && !V8_OS_CYGWIN
 
 #define USE_SIGNALS
 
@@ skipping 199 matching lines @@
  public:
   PlatformData() : vm_tid_(pthread_self()) {}
   pthread_t vm_tid() const { return vm_tid_; }
 
  private:
   pthread_t vm_tid_;
 };
 
 class SamplerManager {
  public:
-  SamplerManager() : sampler_map_(base::HashMap::PointersMatch) {}
+  SamplerManager() : sampler_map_() {}
 
   void AddSampler(Sampler* sampler) {
     AtomicGuard atomic_guard(&samplers_access_counter_);
     DCHECK(sampler->IsActive() || !sampler->IsRegistered());
     // Add sampler into map if needed.
     pthread_t thread_id = sampler->platform_data()->vm_tid();
     base::HashMap::Entry* entry =
             sampler_map_.LookupOrInsert(ThreadKey(thread_id),
                                         ThreadHash(thread_id));
     DCHECK(entry != nullptr);
@@ skipping 423 matching lines @@
 #endif
     SampleStack(state);
   }
   ResumeThread(profiled_thread);
 }
 
 #endif  // USE_SIGNALS
 
 }  // namespace sampler
 }  // namespace v8