Increase allocation register capacity for desktop platforms

base/trace_event/heap_profiler_allocation_register.h

Index: base/trace_event/heap_profiler_allocation_register.h
diff --git a/base/trace_event/heap_profiler_allocation_register.h b/base/trace_event/heap_profiler_allocation_register.h
index 873aebfc0cb3ca7a491ecc4a4a0e633bc70b5823..d6a02faeaeaacca487e3ff13d7f71dac34768da1 100644
--- a/base/trace_event/heap_profiler_allocation_register.h
+++ b/base/trace_event/heap_profiler_allocation_register.h
@@ -16,6 +16,7 @@
 #include "base/process/process_metrics.h"
 #include "base/template_util.h"
 #include "base/trace_event/heap_profiler_allocation_context.h"
+#include "build/build_config.h"
 
 namespace base {
 namespace trace_event {
@@ -198,7 +199,9 @@ class FixedHashMap {
     // the simplest solution is to just allocate a humongous chunk of address
     // space.
 
-    DCHECK_LT(next_unused_cell_, num_cells_ + 1);
+    CHECK_LT(next_unused_cell_, num_cells_ + 1)
+        << "Allocation Register hash table has too little capacity. Increase "
+           "the capacity to run heap profiler in large sessions.";
 
     return &cells_[idx];
   }
@@ -299,10 +302,16 @@ class BASE_EXPORT AllocationRegister {
  private:
   friend AllocationRegisterTest;
 
-  // Expect max 1.5M allocations. Number of buckets is 2^18 for optimal
-  // hashing and should be changed together with AddressHasher.
+// Expect lower number of allocations from mobile platforms. Load factor
+// (capacity / bucket count) is kept less than 10 for optimal hashing. The
+// number of buckets should be changed together with AddressHasher.
+#if defined(OS_ANDROID) || defined(OS_IOS)
   static const size_t kAllocationBuckets = 1 << 18;
   static const size_t kAllocationCapacity = 1500000;
+#else
+  static const size_t kAllocationBuckets = 1 << 19;
+  static const size_t kAllocationCapacity = 5000000;
+#endif
 
   // 2^16 works well with BacktraceHasher. When increasing this number make
   // sure BacktraceHasher still produces low number of collisions.