[system-health] Track amount of peak malloced memory in V8.

tracing/tracing/metrics/system_health/memory_metric_test.html

Index: tracing/tracing/metrics/system_health/memory_metric_test.html
diff --git a/tracing/tracing/metrics/system_health/memory_metric_test.html b/tracing/tracing/metrics/system_health/memory_metric_test.html
index f70dd2d02680d94aba787264e259cc8c8401266c..16ea7fa45c82911cefd80d94bb62700b7c5b6634 100644
--- a/tracing/tracing/metrics/system_health/memory_metric_test.html
+++ b/tracing/tracing/metrics/system_health/memory_metric_test.html
@@ -371,9 +371,15 @@ tr.b.unittest.testSuite(function() {
       var v8Dump = newAllocatorDump(pmdRendererA2, 'v8',
           {numerics: {size: 650}});
       var isolateDumpA = addChildDump(v8Dump, 'isolate_A');
-      addChildDump(isolateDumpA, 'malloc', {numerics: {size: 1 }});
+      addChildDump(isolateDumpA, 'malloc', {numerics: {

[petrcermak, 2016/07/21 13:11:49]

Could you also add one isolate with only "size" and one isolate with only
"peak_size"?

[ulan, 2016/07/21 13:47:07]

Done.

+          size: 1,
+          peak_size: 2
+      }});
       var isolateDumpB = addChildDump(v8Dump, 'isolate_B');
-      addChildDump(isolateDumpB, 'malloc', {numerics: {size: 10 }});
+      addChildDump(isolateDumpB, 'malloc', {numerics: {
+          size: 10,
+          peak_size: 20
+      }});
       return [partitionAllocDump, v8Dump];
     })();
     var pmdRendererB2 = addProcessMemoryDump(gmd2, pRendererB, {ts: 40});
@@ -506,6 +512,13 @@ tr.b.unittest.testSuite(function() {
           description: 'effective size of objects allocated by malloc for v8 ' +
               'in all processes in Chrome'
         },
+    'memory:chrome:all_processes:reported_by_chrome:v8:allocated_by_malloc:peak_size':
+        {
+          value: [0, 2 + 20, 0, 0],
+          unit: sizeInBytes_smallerIsBetter,
+          description: 'peak size of objects allocated by malloc for v8 ' +
+              'in all processes in Chrome'
+        },
     'memory:chrome:all_processes:reported_by_chrome:v8:effective_size': {
       value: [0, 650 + 970 + 111, 0, 4e5],
       unit: sizeInBytes_smallerIsBetter,
@@ -627,6 +640,13 @@ tr.b.unittest.testSuite(function() {
           description: 'effective size of objects allocated by malloc for v8 ' +
               'in renderer processes in Chrome'
         },
+    'memory:chrome:renderer_processes:reported_by_chrome:v8:allocated_by_malloc:peak_size':
+        {
+          value: [0, 2 + 20, 0, 0],
+          unit: sizeInBytes_smallerIsBetter,
+          description: 'peak size of objects allocated by malloc for v8 ' +
+              'in renderer processes in Chrome'
+        },
     'memory:chrome:renderer_processes:reported_by_chrome:v8:effective_size': {
       value: [0, 650 + 970, 0, 4e5],
       unit: sizeInBytes_smallerIsBetter,
@@ -1463,7 +1483,10 @@ tr.b.unittest.testSuite(function() {
         size: 67108864
       }});
       var isolateDump = addChildDump(v8Dump, 'isolate');
-      addChildDump(isolateDump, 'malloc', {numerics: {size: 1 }});
+      addChildDump(isolateDump, 'malloc', {numerics: {
+          size: 1,
+          peak_size: 2
+      }});
       return [mallocDump, v8Dump];
     })();
     pmdBrowser6.vmRegions = VMRegionClassificationNode.fromRegions([
@@ -1545,6 +1568,13 @@ tr.b.unittest.testSuite(function() {
           description: 'effective size of objects allocated by malloc for v8 ' +
               'in all processes in WebView'
         },
+    'memory:webview:all_processes:reported_by_chrome:v8:allocated_by_malloc:peak_size':
+        {
+          value: [0, 2],
+          unit: sizeInBytes_smallerIsBetter,
+          description: 'peak size of objects allocated by malloc for v8 ' +
+              'in all processes in WebView'
+        },
     'memory:webview:all_processes:reported_by_chrome:v8:effective_size': {
       value: [4, 67108864],
       unit: sizeInBytes_smallerIsBetter,
@@ -1669,6 +1699,13 @@ tr.b.unittest.testSuite(function() {
           description: 'effective size of objects allocated by malloc for v8 ' +
               'in the browser process in WebView'
         },
+    'memory:webview:browser_process:reported_by_chrome:v8:allocated_by_malloc:peak_size':
+        {
+          value: [0, 2],
+          unit: sizeInBytes_smallerIsBetter,
+          description: 'peak size of objects allocated by malloc for v8 ' +
+              'in the browser process in WebView'
+        },
     'memory:webview:browser_process:reported_by_chrome:v8:effective_size': {
       value: [4, 67108864],
       unit: sizeInBytes_smallerIsBetter,