Record VM size in LARGE_MB histogram

The metric recorded is over 1GB limit most ofthe times.

BUG=843419

Change-Id: I199c2ed548f28be99d37fe797e0fad47a8d71fb2
Reviewed-on: https://chromium-review.googlesource.com/1096420
Commit-Queue: Siddhartha S <ssid@chromium.org>
Reviewed-by: Ilya Sherman <isherman@chromium.org>
Reviewed-by: Kenichi Ishibashi <bashi@chromium.org>
Cr-Commit-Position: refs/heads/master@{#566353}

chrome/browser/android/oom_intervention/oom_intervention_tab_helper.cc

@@ -242,8 +242,8 @@ void OomInterventionTabHelper::OnCrashDumpProcessed(
   UMA_HISTOGRAM_MEMORY_MB(
       "Memory.Experimental.OomIntervention.RendererBlinkUsageAtOOM",
       metrics->current_blink_usage_kb / 1024);
-  UMA_HISTOGRAM_MEMORY_MB(
-      "Memory.Experimental.OomIntervention.RendererVmSizeAtOOM",
+  UMA_HISTOGRAM_MEMORY_LARGE_MB(
+      "Memory.Experimental.OomIntervention.RendererVmSizeAtOOMLarge",
       metrics->current_vm_size_kb / 1024);
 
   base::TimeDelta time_since_last_navigation;

tools/metrics/histograms/histograms.xml

@@ -42401,6 +42401,7 @@ uploading your change for review.
     name="Memory.Experimental.OomIntervention.RendererPrivateMemoryFootprintAtOOM"
     units="MB">
   <owner>ssid@chromium.org</owner>
+  <owner>bashi@chromium.org</owner>
   <summary>
     The renderer process' private memory footprint when a foreground OOM occurs.
     This was last recorded metric by renderer a few seconds before getting
@@ -42412,6 +42413,7 @@ uploading your change for review.
     name="Memory.Experimental.OomIntervention.RendererSwapFootprintAtOOM"
     units="MB">
   <owner>ssid@chromium.org</owner>
+  <owner>bashi@chromium.org</owner>
   <summary>
     The renderer process' swap size when a foreground OOM occurs. This was last
     recorded metric by renderer a few seconds before getting killed.
@@ -42430,8 +42432,22 @@ uploading your change for review.
 </histogram>
 
 <histogram name="Memory.Experimental.OomIntervention.RendererVmSizeAtOOM"
+    units="MB" expires_after="2018-06-12">
+  <obsolete>
+    Replaced by Memory.Experimental.OomIntervention.RendererVmSizeAtOOMLarge.
+  </obsolete>
+  <owner>ssid@chromium.org</owner>
+  <summary>
+    The renderer process' virtual memory usage, when a foreground OOM occurs.
+    This was last recorded metric by renderer a few seconds before getting
+    killed.
+  </summary>
+</histogram>
+
+<histogram name="Memory.Experimental.OomIntervention.RendererVmSizeAtOOMLarge"
     units="MB">
   <owner>ssid@chromium.org</owner>
+  <owner>bashi@chromium.org</owner>
   <summary>
     The renderer process' virtual memory usage, when a foreground OOM occurs.
     This was last recorded metric by renderer a few seconds before getting