InPrePaint document state and PrePaintTreeWalk class

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

Index: third_party/WebKit/Source/core/paint/PrePaintTreeWalk.cpp
diff --git a/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp b/third_party/WebKit/Source/core/paint/PrePaintTreeWalk.cpp
similarity index 93%
rename from third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
rename to third_party/WebKit/Source/core/paint/PrePaintTreeWalk.cpp
index 224f99c3872452f09416b9b52931a5de571633fb..53ae041ab9eee125521b66b24528395974750399 100644
--- a/third_party/WebKit/Source/core/paint/PaintPropertyTreeBuilder.cpp
+++ b/third_party/WebKit/Source/core/paint/PrePaintTreeWalk.cpp
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
-#include "core/paint/PaintPropertyTreeBuilder.h"
+#include "core/paint/PrePaintTreeWalk.h"
 
 #include "core/frame/FrameView.h"
 #include "core/layout/LayoutPart.h"
@@ -19,8 +19,8 @@ namespace blink {
 // The walk will be done in the primary tree order (= DOM order), thus the context will also be
 // responsible for bookkeeping tree state in other order, for example, the most recent position
 // container seen.
-struct PaintPropertyTreeBuilderContext {
-    PaintPropertyTreeBuilderContext()
+struct PrePaintTreeWalkContext {
+    PrePaintTreeWalkContext()
         : currentTransform(nullptr)
         , currentClip(nullptr)
         , transformForAbsolutePosition(nullptr)
@@ -62,14 +62,14 @@ struct PaintPropertyTreeBuilderContext {
     EffectPaintPropertyNode* currentEffect;
 };
 
-void PaintPropertyTreeBuilder::buildPropertyTrees(FrameView& rootFrame)
+void PrePaintTreeWalk::buildPropertyTrees(FrameView& rootFrame)
 {
-    walk(rootFrame, PaintPropertyTreeBuilderContext());
+    walk(rootFrame, PrePaintTreeWalkContext());
 }
 
-void PaintPropertyTreeBuilder::walk(FrameView& frameView, const PaintPropertyTreeBuilderContext& context)
+void PrePaintTreeWalk::walk(FrameView& frameView, const PrePaintTreeWalkContext& context)
 {
-    PaintPropertyTreeBuilderContext localContext(context);
+    PrePaintTreeWalkContext localContext(context);
 
     // TODO(pdr): Creating paint properties for FrameView here will not be
     // needed once settings()->rootLayerScrolls() is enabled.
@@ -100,7 +100,7 @@ void PaintPropertyTreeBuilder::walk(FrameView& frameView, const PaintPropertyTre
         walk(*layoutView, localContext);
 }
 
-static void deriveBorderBoxFromContainerContext(const LayoutObject& object, PaintPropertyTreeBuilderContext& context)
+static void deriveBorderBoxFromContainerContext(const LayoutObject& object, PrePaintTreeWalkContext& context)
 {
     if (!object.isBoxModelObject())
         return;
@@ -134,7 +134,7 @@ static void deriveBorderBoxFromContainerContext(const LayoutObject& object, Pain
         context.paintOffset += toLayoutBox(boxModelObject).locationOffset();
 }
 
-static PassRefPtr<TransformPaintPropertyNode> createPaintOffsetTranslationIfNeeded(const LayoutObject& object, PaintPropertyTreeBuilderContext& context)
+static PassRefPtr<TransformPaintPropertyNode> createPaintOffsetTranslationIfNeeded(const LayoutObject& object, PrePaintTreeWalkContext& context)
 {
     bool shouldCreatePaintOffsetTranslationNode = false;
     if (object.isSVGRoot()) {
@@ -167,7 +167,7 @@ static FloatPoint3D transformOrigin(const LayoutBox& box)
         style.transformOriginZ());
 }
 
-static PassRefPtr<TransformPaintPropertyNode> createTransformIfNeeded(const LayoutObject& object, PaintPropertyTreeBuilderContext& context)
+static PassRefPtr<TransformPaintPropertyNode> createTransformIfNeeded(const LayoutObject& object, PrePaintTreeWalkContext& context)
 {
     if (object.isSVG() && !object.isSVGRoot()) {
         const AffineTransform& transform = object.localToParentTransform();
@@ -196,7 +196,7 @@ static PassRefPtr<TransformPaintPropertyNode> createTransformIfNeeded(const Layo
     return newTransformNodeForTransform.release();
 }
 
-static PassRefPtr<EffectPaintPropertyNode> createEffectIfNeeded(const LayoutObject& object, PaintPropertyTreeBuilderContext& context)
+static PassRefPtr<EffectPaintPropertyNode> createEffectIfNeeded(const LayoutObject& object, PrePaintTreeWalkContext& context)
 {
     const ComputedStyle& style = object.styleRef();
     if (!style.hasOpacity())
@@ -206,7 +206,7 @@ static PassRefPtr<EffectPaintPropertyNode> createEffectIfNeeded(const LayoutObje
     return newEffectNode.release();
 }
 
-static PassRefPtr<ClipPaintPropertyNode> createOverflowClipIfNeeded(const LayoutObject& object, PaintPropertyTreeBuilderContext& context)
+static PassRefPtr<ClipPaintPropertyNode> createOverflowClipIfNeeded(const LayoutObject& object, PrePaintTreeWalkContext& context)
 {
     if (!object.isBox())
         return nullptr;
@@ -250,7 +250,7 @@ static FloatPoint perspectiveOrigin(const LayoutBox& box)
         floatValueForLength(style.perspectiveOriginY(), borderBoxSize.height()));
 }
 
-static PassRefPtr<TransformPaintPropertyNode> createPerspectiveIfNeeded(const LayoutObject& object, PaintPropertyTreeBuilderContext& context)
+static PassRefPtr<TransformPaintPropertyNode> createPerspectiveIfNeeded(const LayoutObject& object, PrePaintTreeWalkContext& context)
 {
     const ComputedStyle& style = object.styleRef();
     if (!object.isBox() || !style.hasPerspective())
@@ -263,7 +263,7 @@ static PassRefPtr<TransformPaintPropertyNode> createPerspectiveIfNeeded(const La
     return newTransformNodeForPerspective.release();
 }
 
-static PassRefPtr<TransformPaintPropertyNode> createScrollTranslationIfNeeded(const LayoutObject& object, PaintPropertyTreeBuilderContext& context)
+static PassRefPtr<TransformPaintPropertyNode> createScrollTranslationIfNeeded(const LayoutObject& object, PrePaintTreeWalkContext& context)
 {
     if (!object.isBoxModelObject() || !object.hasOverflowClip())
         return nullptr;
@@ -281,7 +281,7 @@ static PassRefPtr<TransformPaintPropertyNode> createScrollTranslationIfNeeded(co
     return newTransformNodeForScrollTranslation.release();
 }
 
-static void updateOutOfFlowContext(const LayoutObject& object, PaintPropertyTreeBuilderContext& context)
+static void updateOutOfFlowContext(const LayoutObject& object, PrePaintTreeWalkContext& context)
 {
     // At the html->svg boundary (see: createPaintOffsetTranslationIfNeeded) the currentTransform is
     // up-to-date for all children of the svg root element. Additionally, inside SVG, all positioning
@@ -303,7 +303,7 @@ static void updateOutOfFlowContext(const LayoutObject& object, PaintPropertyTree
     }
 }
 
-static PassOwnPtr<ObjectPaintProperties::LocalBorderBoxProperties> recordTreeContextIfNeeded(LayoutObject& object, const PaintPropertyTreeBuilderContext& context)
+static PassOwnPtr<ObjectPaintProperties::LocalBorderBoxProperties> recordTreeContextIfNeeded(LayoutObject& object, const PrePaintTreeWalkContext& context)
 {
     // Note: Currently only layer painter makes use of the pre-computed context.
     // This condition may be loosened with no adverse effects beside memory use.
@@ -318,9 +318,9 @@ static PassOwnPtr<ObjectPaintProperties::LocalBorderBoxProperties> recordTreeCon
     return recordedContext.release();
 }
 
-void PaintPropertyTreeBuilder::walk(LayoutObject& object, const PaintPropertyTreeBuilderContext& context)
+void PrePaintTreeWalk::walk(LayoutObject& object, const PrePaintTreeWalkContext& context)
 {
-    PaintPropertyTreeBuilderContext localContext(context);
+    PrePaintTreeWalkContext localContext(context);
 
     deriveBorderBoxFromContainerContext(object, localContext);
     RefPtr<TransformPaintPropertyNode> newTransformNodeForPaintOffsetTranslation = createPaintOffsetTranslationIfNeeded(object, localContext);