memory-infra: Switch to MemoryPeakDetector and simplify MemoryDumpScheduler

base/trace_event/memory_peak_detector.cc

Index: base/trace_event/memory_peak_detector.cc
diff --git a/base/trace_event/memory_peak_detector.cc b/base/trace_event/memory_peak_detector.cc
index f0c1ddff24a91e5c44639fbe25ac7a1357c5c4fe..c2ea9957e6c202a5a46c9c442a5c3e5efdb80511 100644
--- a/base/trace_event/memory_peak_detector.cc
+++ b/base/trace_event/memory_peak_detector.cc
@@ -118,6 +118,8 @@ void MemoryPeakDetector::StopInternal() {
   DCHECK_NE(NOT_INITIALIZED, state_);
   state_ = DISABLED;
   ++generation_;
+  for (const scoped_refptr<MemoryDumpProviderInfo>& mdp_info : dump_providers_)
+    mdp_info->dump_provider->SuspendFastMemoryPolling();
   dump_providers_.clear();
 }
 
@@ -256,5 +258,16 @@ void MemoryPeakDetector::SetStaticThresholdForTesting(
   static_threshold_bytes_ = static_threshold_bytes;
 }
 
+MemoryPeakDetector::MemoryPeakDetector::Config::Config()
+    : Config(0, 0, false) {}
+
+MemoryPeakDetector::MemoryPeakDetector::Config::Config(
+    uint32_t polling_interval_ms,
+    uint32_t min_time_between_peaks_ms,
+    bool enable_verbose_poll_tracing)
+    : polling_interval_ms(polling_interval_ms),
+      min_time_between_peaks_ms(min_time_between_peaks_ms),
+      enable_verbose_poll_tracing(enable_verbose_poll_tracing) {}
+
 }  // namespace trace_event
 }  // namespace base