Notify paint for each frame

third_party/WebKit/Source/core/paint/FramePainter.cpp

Index: third_party/WebKit/Source/core/paint/FramePainter.cpp
diff --git a/third_party/WebKit/Source/core/paint/FramePainter.cpp b/third_party/WebKit/Source/core/paint/FramePainter.cpp
index dad69700113834beb63a0f3a560e64801972239d..fe2644ac3a59ec2d472b61f0a9076801114843da 100644
--- a/third_party/WebKit/Source/core/paint/FramePainter.cpp
+++ b/third_party/WebKit/Source/core/paint/FramePainter.cpp
@@ -9,6 +9,7 @@
 #include "core/inspector/InspectorTraceEvents.h"
 #include "core/layout/LayoutView.h"
 #include "core/page/Page.h"
+#include "core/paint/FramePaintTiming.h"
 #include "core/paint/LayoutObjectDrawingRecorder.h"
 #include "core/paint/PaintInfo.h"
 #include "core/paint/PaintLayer.h"
@@ -27,8 +28,11 @@ namespace blink {
 
 bool FramePainter::in_paint_contents_ = false;
 
-void FramePainter::Paint(GraphicsContext& context,
-                         const GlobalPaintFlags global_paint_flags,
+FramePainter::FramePainter(GraphicsContext& context,
+                           const FrameView& frame_view)
+    : context_(context), frame_view_(&frame_view) {}
+
+void FramePainter::Paint(const GlobalPaintFlags global_paint_flags,
                          const CullRect& rect) {
   GetFrameView().NotifyPageThatContentAreaWillPaint();
 
@@ -56,28 +60,28 @@ void FramePainter::Paint(GraphicsContext& context,
       if (const PropertyTreeState* contents_state =
               frame_view_->TotalPropertyTreeStateForContents()) {
         PaintChunkProperties properties(
-            context.GetPaintController().CurrentPaintChunkProperties());
+            context_.GetPaintController().CurrentPaintChunkProperties());
         properties.property_tree_state = *contents_state;
-        scoped_paint_chunk_properties.emplace(context.GetPaintController(),
+        scoped_paint_chunk_properties.emplace(context_.GetPaintController(),
                                               *GetFrameView().GetLayoutView(),
                                               properties);
       }
     }
 
     TransformRecorder transform_recorder(
-        context, *GetFrameView().GetLayoutView(),
+        context_, *GetFrameView().GetLayoutView(),
         AffineTransform::Translation(
             GetFrameView().X() - GetFrameView().ScrollX(),
             GetFrameView().Y() - GetFrameView().ScrollY()));
 
     if (RuntimeEnabledFeatures::rootLayerScrollingEnabled()) {
-      PaintContents(context, global_paint_flags, document_dirty_rect);
+      PaintContents(global_paint_flags, document_dirty_rect);
     } else {
-      ClipRecorder clip_recorder(context, *GetFrameView().GetLayoutView(),
+      ClipRecorder clip_recorder(context_, *GetFrameView().GetLayoutView(),
                                  DisplayItem::kClipFrameToVisibleContentRect,
                                  GetFrameView().VisibleContentRect());
 
-      PaintContents(context, global_paint_flags, document_dirty_rect);
+      PaintContents(global_paint_flags, document_dirty_rect);
     }
   }
 
@@ -98,33 +102,32 @@ void FramePainter::Paint(GraphicsContext& context,
         // contents state but we want to exclude the content-specific
         // properties. This prevents the scrollbars from scrolling, for example.
         PaintChunkProperties properties(
-            context.GetPaintController().CurrentPaintChunkProperties());
+            context_.GetPaintController().CurrentPaintChunkProperties());
         properties.property_tree_state.SetTransform(
             frame_view_->PreTranslation());
         properties.property_tree_state.SetClip(
             frame_view_->ContentClip()->Parent());
         properties.property_tree_state.SetEffect(contents_state->Effect());
-        scoped_paint_chunk_properties.emplace(context.GetPaintController(),
+        scoped_paint_chunk_properties.emplace(context_.GetPaintController(),
                                               *GetFrameView().GetLayoutView(),
                                               properties);
       }
     }
 
     TransformRecorder transform_recorder(
-        context, *GetFrameView().GetLayoutView(),
+        context_, *GetFrameView().GetLayoutView(),
         AffineTransform::Translation(GetFrameView().X(), GetFrameView().Y()));
 
     ClipRecorder recorder(
-        context, *GetFrameView().GetLayoutView(),
+        context_, *GetFrameView().GetLayoutView(),
         DisplayItem::kClipFrameScrollbars,
         IntRect(IntPoint(), visible_area_with_scrollbars.Size()));
 
-    PaintScrollbars(context, scroll_view_dirty_rect);
+    PaintScrollbars(scroll_view_dirty_rect);
   }
 }
 
-void FramePainter::PaintContents(GraphicsContext& context,
-                                 const GlobalPaintFlags global_paint_flags,
+void FramePainter::PaintContents(const GlobalPaintFlags global_paint_flags,
                                  const IntRect& rect) {
   Document* document = GetFrameView().GetFrame().GetDocument();
 
@@ -147,6 +150,7 @@ void FramePainter::PaintContents(GraphicsContext& context,
   DCHECK(document->Lifecycle().GetState() >=
          DocumentLifecycle::kCompositingClean);
 
+  FramePaintTiming frame_paint_timing(context_, &GetFrameView().GetFrame());
   TRACE_EVENT1("devtools.timeline,rail", "Paint", "data",
                InspectorPaintEvent::Data(layout_view, LayoutRect(rect), 0));
 
@@ -174,12 +178,12 @@ void FramePainter::PaintContents(GraphicsContext& context,
 
   float device_scale_factor = blink::DeviceScaleFactorDeprecated(
       root_layer->GetLayoutObject().GetFrame());
-  context.SetDeviceScaleFactor(device_scale_factor);
+  context_.SetDeviceScaleFactor(device_scale_factor);
 
-  layer_painter.Paint(context, LayoutRect(rect), local_paint_flags);
+  layer_painter.Paint(context_, LayoutRect(rect), local_paint_flags);
 
   if (root_layer->ContainsDirtyOverlayScrollbars())
-    layer_painter.PaintOverlayScrollbars(context, LayoutRect(rect),
+    layer_painter.PaintOverlayScrollbars(context_, LayoutRect(rect),
                                          local_paint_flags);
 
   // Regions may have changed as a result of the visibility/z-index of element
@@ -194,40 +198,38 @@ void FramePainter::PaintContents(GraphicsContext& context,
     in_paint_contents_ = false;
   }
 
-  probe::didPaint(layout_view->GetFrame(), 0, context, LayoutRect(rect));
+  probe::didPaint(layout_view->GetFrame(), 0, context_, LayoutRect(rect));
 }
 
-void FramePainter::PaintScrollbars(GraphicsContext& context,
-                                   const IntRect& rect) {
+void FramePainter::PaintScrollbars(const IntRect& rect) {
   if (GetFrameView().HorizontalScrollbar() &&
       !GetFrameView().LayerForHorizontalScrollbar())
-    PaintScrollbar(context, *GetFrameView().HorizontalScrollbar(), rect);
+    PaintScrollbar(*GetFrameView().HorizontalScrollbar(), rect);
   if (GetFrameView().VerticalScrollbar() &&
       !GetFrameView().LayerForVerticalScrollbar())
-    PaintScrollbar(context, *GetFrameView().VerticalScrollbar(), rect);
+    PaintScrollbar(*GetFrameView().VerticalScrollbar(), rect);
 
   if (GetFrameView().LayerForScrollCorner() ||
       !GetFrameView().IsScrollCornerVisible()) {
     return;
   }
 
-  PaintScrollCorner(context, GetFrameView().ScrollCornerRect());
+  PaintScrollCorner(GetFrameView().ScrollCornerRect());
 }
 
-void FramePainter::PaintScrollCorner(GraphicsContext& context,
-                                     const IntRect& corner_rect) {
+void FramePainter::PaintScrollCorner(const IntRect& corner_rect) {
   if (GetFrameView().ScrollCorner()) {
     bool needs_background = GetFrameView().GetFrame().IsMainFrame();
     if (needs_background &&
         !LayoutObjectDrawingRecorder::UseCachedDrawingIfPossible(
-            context, *GetFrameView().GetLayoutView(),
+            context_, *GetFrameView().GetLayoutView(),
             DisplayItem::kScrollbarCorner)) {
       LayoutObjectDrawingRecorder drawing_recorder(
-          context, *GetFrameView().GetLayoutView(),
+          context_, *GetFrameView().GetLayoutView(),
           DisplayItem::kScrollbarCorner, FloatRect(corner_rect));
-      context.FillRect(corner_rect, GetFrameView().BaseBackgroundColor());
+      context_.FillRect(corner_rect, GetFrameView().BaseBackgroundColor());
     }
-    ScrollbarPainter::PaintIntoRect(*GetFrameView().ScrollCorner(), context,
+    ScrollbarPainter::PaintIntoRect(*GetFrameView().ScrollCorner(), context_,
                                     corner_rect.Location(),
                                     LayoutRect(corner_rect));
     return;
@@ -243,25 +245,23 @@ void FramePainter::PaintScrollCorner(GraphicsContext& context,
     NOTREACHED();
   }
 
-  theme->PaintScrollCorner(context, *GetFrameView().GetLayoutView(),
+  theme->PaintScrollCorner(context_, *GetFrameView().GetLayoutView(),
                            corner_rect);
 }
 
-void FramePainter::PaintScrollbar(GraphicsContext& context,
-                                  Scrollbar& bar,
-                                  const IntRect& rect) {
+void FramePainter::PaintScrollbar(Scrollbar& bar, const IntRect& rect) {
   bool needs_background =
       bar.IsCustomScrollbar() && GetFrameView().GetFrame().IsMainFrame();
   if (needs_background) {
     IntRect to_fill = bar.FrameRect();
     to_fill.Intersect(rect);
-    context.FillRect(to_fill, GetFrameView().BaseBackgroundColor());
+    context_.FillRect(to_fill, GetFrameView().BaseBackgroundColor());
   }
 
-  bar.Paint(context, CullRect(rect));
+  bar.Paint(context_, CullRect(rect));
 }
 
-const FrameView& FramePainter::GetFrameView() {
+const FrameView& FramePainter::GetFrameView() const {
   DCHECK(frame_view_);
   return *frame_view_;
 }