Making the MemoryDumpManager less aggressive in disabling dump providers on failures.

base/trace_event/memory_dump_manager.h

 // Copyright 2015 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.
 
 #ifndef BASE_TRACE_EVENT_MEMORY_DUMP_MANAGER_H_
 #define BASE_TRACE_EVENT_MEMORY_DUMP_MANAGER_H_
 
 #include <vector>
 
 #include "base/atomicops.h"
@@ skipping 72 matching lines @@
 
  private:
   // Descriptor struct used to hold information about registered MDPs. It is
   // deliberately copyable, in order to allow to be used as hash_map value.
   struct MemoryDumpProviderInfo {
     MemoryDumpProviderInfo(
         const scoped_refptr<SingleThreadTaskRunner>& task_runner);
     ~MemoryDumpProviderInfo();
 
     scoped_refptr<SingleThreadTaskRunner> task_runner;  // Optional.
+    int consecutive_failures;  // Number of times the provider failed (to
+                               // disable the MDPs).
     bool disabled;  // For fail-safe logic (auto-disable failing MDPs).
   };
 
   friend struct DefaultDeleter<MemoryDumpManager>;  // For the testing instance.
   friend struct DefaultSingletonTraits<MemoryDumpManager>;
   friend class MemoryDumpManagerDelegate;
   friend class MemoryDumpManagerTest;
+  FRIEND_TEST_ALL_PREFIXES(MemoryDumpManagerTest, DisableFailingDumpers);
+
+  static const int kMaxConsecutiveFailuresCount;
 
   static void SetInstanceForTesting(MemoryDumpManager* instance);
 
   MemoryDumpManager();
   virtual ~MemoryDumpManager();
 
   // Internal, used only by MemoryDumpManagerDelegate.
   // Creates a memory dump for the current process and appends it to the trace.
   // |callback| will be invoked asynchronously upon completion on the same
   // thread on which CreateProcessDump() was called.
@@ skipping 51 matching lines @@
   }
 
  private:
   DISALLOW_COPY_AND_ASSIGN(MemoryDumpManagerDelegate);
 };
 
 }  // namespace trace_event
 }  // namespace base
 
 #endif  // BASE_TRACE_EVENT_MEMORY_DUMP_MANAGER_H_