[Memory-UMA] Implement basic working prototype.

chrome/browser/metrics/process_memory_metrics_emitter.cc

Index: chrome/browser/metrics/process_memory_metrics_emitter.cc
diff --git a/chrome/browser/metrics/process_memory_metrics_emitter.cc b/chrome/browser/metrics/process_memory_metrics_emitter.cc
index 2b53ff17370fc73ac7d37f4ca6b3fef97dd2e0a6..1867fa1d7ce3ee9924749e5dcc1238299e954d93 100644
--- a/chrome/browser/metrics/process_memory_metrics_emitter.cc
+++ b/chrome/browser/metrics/process_memory_metrics_emitter.cc
@@ -17,34 +17,33 @@ namespace {
 
 void EmitBrowserMemoryMetrics(const ProcessMemoryDumpPtr& pmd) {
   UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.Experimental.Browser2.Resident",
-                                pmd->os_dump.resident_set_kb * 1024);
+                                pmd->os_dump.resident_set_kb / 1024);
   UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.Experimental.Browser2.Malloc",
-                                pmd->chrome_dump.malloc_total_kb * 1024);
-
+                                pmd->chrome_dump.malloc_total_kb / 1024);
   // TODO(erikchen): Emit private memory footprint. https://crbug.com/721434.
 }
 
 void EmitRendererMemoryMetrics(const ProcessMemoryDumpPtr& pmd) {
   UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.Experimental.Renderer2.Resident",
-                                pmd->os_dump.resident_set_kb * 1024);
+                                pmd->os_dump.resident_set_kb / 1024);
   UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.Experimental.Renderer2.Malloc",
-                                pmd->chrome_dump.malloc_total_kb * 1024);
+                                pmd->chrome_dump.malloc_total_kb / 1024);
   UMA_HISTOGRAM_MEMORY_LARGE_MB(
       "Memory.Experimental.Renderer2.PartitionAlloc",
-      pmd->chrome_dump.partition_alloc_total_kb * 1024);
+      pmd->chrome_dump.partition_alloc_total_kb / 1024);
   UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.Experimental.Renderer2.BlinkGC",
-                                pmd->chrome_dump.blink_gc_total_kb * 1024);
+                                pmd->chrome_dump.blink_gc_total_kb / 1024);
   UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.Experimental.Renderer2.V8",
-                                pmd->chrome_dump.v8_total_kb * 1024);
+                                pmd->chrome_dump.v8_total_kb / 1024);
 
   // TODO(erikchen): Emit private memory footprint. https://crbug.com/721434.
 }
 
 void EmitGpuMemoryMetrics(const ProcessMemoryDumpPtr& pmd) {
   UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.Experimental.Gpu2.Resident",
-                                pmd->os_dump.resident_set_kb * 1024);
+                                pmd->os_dump.resident_set_kb / 1024);
   UMA_HISTOGRAM_MEMORY_LARGE_MB("Memory.Experimental.Gpu2.Malloc",
-                                pmd->chrome_dump.malloc_total_kb * 1024);
+                                pmd->chrome_dump.malloc_total_kb / 1024);
 
   // TODO(erikchen): Emit private memory footprint. https://crbug.com/721434.
 }