Refactor InspectorWebPerfAgent: update lifecycle management to be per Local Frame root; replace hea…

third_party/WebKit/Source/core/frame/LocalFrame.cpp

 /*
  * Copyright (C) 1998, 1999 Torben Weis <weis@kde.org>
  *                     1999 Lars Knoll <knoll@kde.org>
  *                     1999 Antti Koivisto <koivisto@kde.org>
  *                     2000 Simon Hausmann <hausmann@kde.org>
  *                     2000 Stefan Schimanski <1Stein@gmx.de>
  *                     2001 George Staikos <staikos@kde.org>
  * Copyright (C) 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Apple Inc. All
  * rights reserved.
  * Copyright (C) 2005 Alexey Proskuryakov <ap@nypop.com>
@@ skipping 35 matching lines @@
 #include "core/frame/EventHandlerRegistry.h"
 #include "core/frame/FrameConsole.h"
 #include "core/frame/FrameHost.h"
 #include "core/frame/FrameView.h"
 #include "core/frame/LocalDOMWindow.h"
 #include "core/frame/Settings.h"
 #include "core/frame/VisualViewport.h"
 #include "core/html/HTMLFrameElementBase.h"
 #include "core/html/HTMLPlugInElement.h"
 #include "core/input/EventHandler.h"
+#include "core/inspector/InspectedFrames.h"
 #include "core/inspector/InspectorInstrumentation.h"
+#include "core/inspector/InspectorWebPerfAgent.h"
 #include "core/layout/HitTestResult.h"
 #include "core/layout/LayoutView.h"
 #include "core/layout/api/LayoutPartItem.h"
 #include "core/layout/api/LayoutViewItem.h"
 #include "core/layout/compositing/PaintLayerCompositor.h"
 #include "core/loader/FrameLoadRequest.h"
 #include "core/loader/FrameLoaderClient.h"
 #include "core/loader/NavigationScheduler.h"
 #include "core/page/ChromeClient.h"
 #include "core/page/FocusController.h"
 #include "core/page/Page.h"
 #include "core/page/scrolling/ScrollingCoordinator.h"
 #include "core/paint/ObjectPainter.h"
 #include "core/paint/PaintInfo.h"
 #include "core/paint/PaintLayer.h"
 #include "core/paint/TransformRecorder.h"
 #include "core/svg/SVGDocumentExtensions.h"
+#include "core/timing/Performance.h"
 #include "platform/DragImage.h"
 #include "platform/PluginScriptForbiddenScope.h"
 #include "platform/RuntimeEnabledFeatures.h"
 #include "platform/ScriptForbiddenScope.h"
 #include "platform/graphics/GraphicsContext.h"
 #include "platform/graphics/StaticBitmapImage.h"
 #include "platform/graphics/paint/ClipRecorder.h"
 #include "platform/graphics/paint/PaintController.h"
 #include "platform/graphics/paint/SkPictureBuilder.h"
 #include "platform/graphics/paint/TransformDisplayItem.h"
@@ skipping 238 matching lines @@
 }
 
 LocalFrame::~LocalFrame() {
   // Verify that the FrameView has been cleared as part of detaching
   // the frame owner.
   ASSERT(!m_view);
 }
 
 DEFINE_TRACE(LocalFrame) {
   visitor->trace(m_instrumentingAgents);
+  visitor->trace(m_inspectorWebPerfAgent);
+  visitor->trace(m_webPerformanceObservers);
   visitor->trace(m_loader);
   visitor->trace(m_navigationScheduler);
   visitor->trace(m_view);
   visitor->trace(m_domWindow);
   visitor->trace(m_pagePopupOwner);
   visitor->trace(m_script);
   visitor->trace(m_editor);
   visitor->trace(m_spellChecker);
   visitor->trace(m_selection);
   visitor->trace(m_eventHandler);
@@ skipping 202 matching lines @@
 }
 
 bool LocalFrame::isCrossOriginSubframe() const {
   const SecurityOrigin* securityOrigin = securityContext()->getSecurityOrigin();
   Frame* top = tree().top();
   return top &&
          !securityOrigin->canAccess(
              top->securityContext()->getSecurityOrigin());
 }
 
+void LocalFrame::enableInspectorWebPerfAgent(Performance* performance) {
+  m_webPerformanceObservers.add(performance);
+  if (!m_inspectorWebPerfAgent) {
+    m_inspectorWebPerfAgent =
+        new InspectorWebPerfAgent(InspectedFrames::create(this));
+    m_inspectorWebPerfAgent->enable();
+  }
+}
+
+void LocalFrame::disableInspectorWebPerfAgent(Performance* performance) {
+  auto perfEntry = m_webPerformanceObservers.find(performance);
+  DCHECK(perfEntry != m_webPerformanceObservers.end());
+  m_webPerformanceObservers.remove(perfEntry);
+  if (m_webPerformanceObservers.size() == 0) {
+    m_inspectorWebPerfAgent->disable();
+    m_inspectorWebPerfAgent = nullptr;
+  }
+}
+
 void LocalFrame::setPrinting(bool printing,
                              const FloatSize& pageSize,
                              const FloatSize& originalPageSize,
                              float maximumShrinkRatio) {
   // In setting printing, we should not validate resources already cached for
   // the document.  See https://bugs.webkit.org/show_bug.cgi?id=43704
   ResourceCacheValidationSuppressor validationSuppressor(document()->fetcher());
 
   document()->setPrinting(printing ? Document::Printing
                                    : Document::FinishingPrinting);
@@ skipping 344 matching lines @@
   if (m_frame && m_frame->client() && m_frame->client()->frameBlameContext())
     m_frame->client()->frameBlameContext()->Enter();
 }
 
 ScopedFrameBlamer::~ScopedFrameBlamer() {
   if (m_frame && m_frame->client() && m_frame->client()->frameBlameContext())
     m_frame->client()->frameBlameContext()->Leave();
 }
 
 }  // namespace blink