[IndexedDB] Adding async tracing for renderer calls.

third_party/WebKit/Source/modules/indexeddb/IDBCursor.cpp

Index: third_party/WebKit/Source/modules/indexeddb/IDBCursor.cpp
diff --git a/third_party/WebKit/Source/modules/indexeddb/IDBCursor.cpp b/third_party/WebKit/Source/modules/indexeddb/IDBCursor.cpp
index 17fe589df16baa595f0da11e8cead4ec82590a71..49d8da4bb6e9004d7318e01328fcd73b66c54868 100644
--- a/third_party/WebKit/Source/modules/indexeddb/IDBCursor.cpp
+++ b/third_party/WebKit/Source/modules/indexeddb/IDBCursor.cpp
@@ -102,8 +102,7 @@ v8::Local<v8::Object> IDBCursor::AssociateWithWrapper(
 IDBRequest* IDBCursor::update(ScriptState* script_state,
                               const ScriptValue& value,
                               ExceptionState& exception_state) {
-  IDB_TRACE("IDBCursor::update");
-
+  IDB_TRACE("IDBCursor::updateCall");
   if (!transaction_->IsActive()) {
     exception_state.ThrowDOMException(kTransactionInactiveError,
                                       transaction_->InactiveErrorMessage());
@@ -138,7 +137,9 @@ IDBRequest* IDBCursor::update(ScriptState* script_state,
 }
 
 void IDBCursor::advance(unsigned count, ExceptionState& exception_state) {
-  IDB_TRACE("IDBCursor::advance");
+  IDB_TRACE("IDBCursor::advanceCall");
+  auto metrics = WTF::MakeUnique<IDBRequest::ScopedMetricsTracker>(
+      nullptr, "IDBCursor::advance", this);
   if (!count) {
     exception_state.ThrowTypeError(
         "A count argument with value 0 (zero) was supplied, must be greater "
@@ -162,6 +163,7 @@ void IDBCursor::advance(unsigned count, ExceptionState& exception_state) {
   }
 
   request_->SetPendingCursor(this);
+  request_->AssignNewMetrics(std::move(metrics));
   got_value_ = false;
   backend_->Advance(count, request_->CreateWebCallbacks().release());
 }
@@ -169,7 +171,9 @@ void IDBCursor::advance(unsigned count, ExceptionState& exception_state) {
 void IDBCursor::continueFunction(ScriptState* script_state,
                                  const ScriptValue& key_value,
                                  ExceptionState& exception_state) {
-  IDB_TRACE("IDBCursor::continue");
+  IDB_TRACE("IDBCursor::continueCall");
+  auto metrics = WTF::MakeUnique<IDBRequest::ScopedMetricsTracker>(
+      nullptr, "IDBCursor::continue", this);
 
   if (!transaction_->IsActive()) {
     exception_state.ThrowDOMException(kTransactionInactiveError,
@@ -198,6 +202,7 @@ void IDBCursor::continueFunction(ScriptState* script_state,
                                       IDBDatabase::kNotValidKeyErrorMessage);
     return;
   }
+  request_->AssignNewMetrics(std::move(metrics));
   Continue(key, nullptr, exception_state);
 }
 
@@ -205,7 +210,9 @@ void IDBCursor::continuePrimaryKey(ScriptState* script_state,
                                    const ScriptValue& key_value,
                                    const ScriptValue& primary_key_value,
                                    ExceptionState& exception_state) {
-  IDB_TRACE("IDBCursor::continuePrimaryKey");
+  IDB_TRACE("IDBCursor::continuePrimaryKeyCall");
+  auto metrics = WTF::MakeUnique<IDBRequest::ScopedMetricsTracker>(
+      nullptr, "IDBCursor::continuePrimaryKey", this);
 
   if (!transaction_->IsActive()) {
     exception_state.ThrowDOMException(kTransactionInactiveError,
@@ -258,6 +265,7 @@ void IDBCursor::continuePrimaryKey(ScriptState* script_state,
     return;
   }
 
+  request_->AssignNewMetrics(std::move(metrics));
   Continue(key, primary_key, exception_state);
 }
 
@@ -307,7 +315,9 @@ void IDBCursor::Continue(IDBKey* key,
 
 IDBRequest* IDBCursor::deleteFunction(ScriptState* script_state,
                                       ExceptionState& exception_state) {
-  IDB_TRACE("IDBCursor::delete");
+  IDB_TRACE("IDBCursor::deleteCall");
+  auto metrics = WTF::MakeUnique<IDBRequest::ScopedMetricsTracker>(
+      nullptr, "IDBCursor::delete", this);
   if (!transaction_->IsActive()) {
     exception_state.ThrowDOMException(kTransactionInactiveError,
                                       transaction_->InactiveErrorMessage());
@@ -343,8 +353,9 @@ IDBRequest* IDBCursor::deleteFunction(ScriptState* script_state,
   IDBKeyRange* key_range = IDBKeyRange::only(primary_key_, exception_state);
   DCHECK(!exception_state.HadException());
 
-  IDBRequest* request = IDBRequest::Create(script_state, IDBAny::Create(this),
-                                           transaction_.Get());
+  IDBRequest* request =
+      IDBRequest::Create(script_state, IDBAny::Create(this), transaction_.Get(),
+                         std::move(metrics));
   transaction_->BackendDB()->DeleteRange(
       transaction_->Id(), EffectiveObjectStore()->Id(), key_range,
       request->CreateWebCallbacks().release());