Add source line info for JS Profiler ticks to debug protocol.

Contributed by Denis Pravdin <denis.pravdin@intel.com>

Review URL: https://codereview.chromium.org/719853003

git-svn-id: svn://svn.chromium.org/blink/trunk@185428 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/core/inspector/ScriptProfile.cpp

@@ -64,6 +64,26 @@ double ScriptProfile::endTime() const
     return static_cast<double>(m_profile->GetEndTime()) / 1000000;
 }
 
+static RefPtr<TypeBuilder::Array<TypeBuilder::Profiler::PositionTickInfo> > buildInspectorObjectForPositionTicks(const v8::CpuProfileNode* node)
+{
+    RefPtr<TypeBuilder::Array<TypeBuilder::Profiler::PositionTickInfo> > array = TypeBuilder::Array<TypeBuilder::Profiler::PositionTickInfo>::create();
+    unsigned lineCount = node->GetHitLineCount();
+    if (!lineCount)
+        return array;
+
+    Vector<v8::CpuProfileNode::LineTick> entries(lineCount);
+    if (node->GetLineTicks(&entries[0], lineCount)) {
+        for (unsigned i = 0; i < lineCount; i++) {
+            RefPtr<TypeBuilder::Profiler::PositionTickInfo> line = TypeBuilder::Profiler::PositionTickInfo::create()
+                .setLine(entries[i].line)
+                .setTicks(entries[i].hit_count);
+            array->addItem(line);
+        }
+    }
+
+    return array;
+}
+
 static PassRefPtr<TypeBuilder::Profiler::CPUProfileNode> buildInspectorObjectFor(const v8::CpuProfileNode* node)
 {
     v8::HandleScope handleScope(v8::Isolate::GetCurrent());
@@ -75,6 +95,8 @@ static PassRefPtr<TypeBuilder::Profiler::CPUProfileNode> buildInspectorObjectFor
         children->addItem(buildInspectorObjectFor(child));
     }
 
+    RefPtr<TypeBuilder::Array<TypeBuilder::Profiler::PositionTickInfo> > positionTicks = buildInspectorObjectForPositionTicks(node);
+
     RefPtr<TypeBuilder::Profiler::CPUProfileNode> result = TypeBuilder::Profiler::CPUProfileNode::create()
         .setFunctionName(toCoreString(node->GetFunctionName()))
         .setScriptId(String::number(node->GetScriptId()))
@@ -84,6 +106,7 @@ static PassRefPtr<TypeBuilder::Profiler::CPUProfileNode> buildInspectorObjectFor
         .setHitCount(node->GetHitCount())
         .setCallUID(node->GetCallUid())
         .setChildren(children.release())
+        .setPositionTicks(positionTicks.release())
         .setDeoptReason(node->GetBailoutReason())
         .setId(node->GetNodeId());
     return result.release();

third_party/WebKit/Source/devtools/protocol.json

@@ -3647,7 +3647,8 @@
                     { "name": "callUID", "type": "number", "description": "Call UID." },
                     { "name": "children", "type": "array", "items": { "$ref": "CPUProfileNode" }, "description": "Child nodes." },
                     { "name": "deoptReason", "type": "string", "description": "The reason of being not optimized. The function may be deoptimized or marked as don't optimize."},
-                    { "name": "id", "type": "integer", "description": "Unique id of the node." }
+                    { "name": "id", "type": "integer", "description": "Unique id of the node." },
+                    { "name": "positionTicks", "type": "array", "items": { "$ref": "PositionTickInfo" }, "description": "An array of source position ticks." }
                 ]
             },
             {
@@ -3661,6 +3662,15 @@
                     { "name": "samples", "optional": true, "type": "array", "items": { "type": "integer" }, "description": "Ids of samples top nodes." },
                     { "name": "timestamps", "optional": true, "type": "array", "items": { "type": "number" }, "description": "Timestamps of the samples in microseconds." }
                 ]
+            },
+            {
+                "id": "PositionTickInfo",
+                "type": "object",
+                "description": "Specifies a number of samples attributed to a certain source position.",
+                "properties": [
+                    { "name": "line", "type": "integer", "description": "Source line number (1-based)." },
+                    { "name": "ticks", "type": "integer", "description": "Number of samples attributed to the source line." }
+                ]
             }
         ],
         "commands": [