GWP-ASan: Increase constant defaults

Now that https://crrev.com/627865 has landed, increase the amount of
memory GWP-ASan uses to get back to consuming approximately ~40k per
process.

Bug: 896019
Change-Id: Iac888c38f32078e21cf4295bdd756b67f48d68c0
Reviewed-on: https://chromium-review.googlesource.com/c/1448793
Auto-Submit: Vlad Tsyrklevich <vtsyrklevich@chromium.org>
Reviewed-by: Vitaly Buka <vitalybuka@chromium.org>
Commit-Queue: Vlad Tsyrklevich <vtsyrklevich@chromium.org>
Cr-Commit-Position: refs/heads/master@{#628402}

components/gwp_asan/client/gwp_asan.cc

@@ -27,9 +27,9 @@ const base::Feature kGwpAsan{"GwpAsanMalloc",
                              base::FEATURE_DISABLED_BY_DEFAULT};
 
 const base::FeatureParam<int> kMaxAllocationsParam{&kGwpAsan, "MaxAllocations",
-                                                   6};
+                                                   7};
 
-const base::FeatureParam<int> kTotalPagesParam{&kGwpAsan, "TotalPages", 20};
+const base::FeatureParam<int> kTotalPagesParam{&kGwpAsan, "TotalPages", 30};
 
 const base::FeatureParam<int> kAllocationSamplingParam{
     &kGwpAsan, "AllocationSamplingFrequency", 1000};