Fix PurgeAndSuspend.MemoryGrowth.* UMA.

content/renderer/render_thread_impl.cc

Index: content/renderer/render_thread_impl.cc
diff --git a/content/renderer/render_thread_impl.cc b/content/renderer/render_thread_impl.cc
index 791b768e20150c16dbc36542af686f796eeac3b0..757d071264e36eb5e330f34def2d31a13c8b642b 100644
--- a/content/renderer/render_thread_impl.cc
+++ b/content/renderer/render_thread_impl.cc
@@ -1825,7 +1825,7 @@ void RenderThreadImpl::RecordPurgeAndSuspendMemoryGrowthMetrics() const {
       "PurgeAndSuspend.Experimental.MemoryGrowth.BlinkGCKB",
       GET_MEMORY_GROWTH(memory_metrics, purge_and_suspend_memory_metrics_,
                         blink_gc_kb));
-  UMA_HISTOGRAM_MEMORY_MB(
+  UMA_HISTOGRAM_MEMORY_KB(
       "PurgeAndSuspend.Experimental.MemoryGrowth.MallocKB",
       GET_MEMORY_GROWTH(memory_metrics, purge_and_suspend_memory_metrics_,
                         malloc_mb) * 1024);
@@ -1833,11 +1833,11 @@ void RenderThreadImpl::RecordPurgeAndSuspendMemoryGrowthMetrics() const {
       "PurgeAndSuspend.Experimental.MemoryGrowth.DiscardableKB",
       GET_MEMORY_GROWTH(memory_metrics, purge_and_suspend_memory_metrics_,
                         discardable_kb));
-  UMA_HISTOGRAM_MEMORY_MB(
+  UMA_HISTOGRAM_MEMORY_KB(
       "PurgeAndSuspend.Experimental.MemoryGrowth.V8MainThreadIsolateKB",
       GET_MEMORY_GROWTH(memory_metrics, purge_and_suspend_memory_metrics_,
                         v8_main_thread_isolate_mb) * 1024);
-  UMA_HISTOGRAM_MEMORY_MB(
+  UMA_HISTOGRAM_MEMORY_KB(
       "PurgeAndSuspend.Experimental.MemoryGrowth.TotalAllocatedKB",
       GET_MEMORY_GROWTH(memory_metrics, purge_and_suspend_memory_metrics_,
                         total_allocated_mb) * 1024);