Make RenderObject::style() return a const object

Source/core/rendering/RenderTextControl.cpp

Index: Source/core/rendering/RenderTextControl.cpp
diff --git a/Source/core/rendering/RenderTextControl.cpp b/Source/core/rendering/RenderTextControl.cpp
index a537f15e042a0dbb9ed177af3afef014cb2f49e9..ed3fcb355eba414c58249ebdfb7101ce057c613a 100644
--- a/Source/core/rendering/RenderTextControl.cpp
+++ b/Source/core/rendering/RenderTextControl.cpp
@@ -72,8 +72,8 @@ void RenderTextControl::styleDidChange(StyleDifference diff, const RenderStyle*
     if (innerEditorRenderer) {
         // We may have set the width and the height in the old style in layout().
         // Reset them now to avoid getting a spurious layout hint.
-        innerEditorRenderer->style()->setHeight(Length());
-        innerEditorRenderer->style()->setWidth(Length());
+        innerEditorRenderer->deprecatedMutableStyle()->setHeight(Length());
+        innerEditorRenderer->deprecatedMutableStyle()->setWidth(Length());
         innerEditorRenderer->setStyle(createInnerEditorStyle(style()));
         innerEditor->setNeedsStyleRecalc(SubtreeStyleChange, StyleChangeReasonForTracing::create(StyleChangeReason::Control));
     }
@@ -116,7 +116,7 @@ void RenderTextControl::updateFromElement()
 {
     Element* innerEditor = innerEditorElement();
     if (innerEditor && innerEditor->renderer())
-        updateUserModifyProperty(textFormControlElement(), innerEditor->renderer()->style());
+        updateUserModifyProperty(textFormControlElement(), innerEditor->renderer()->deprecatedMutableStyle());
 }
 
 int RenderTextControl::scrollbarThickness() const
@@ -258,7 +258,7 @@ void RenderTextControl::computePreferredLogicalWidths()
 
     m_minPreferredLogicalWidth = 0;
     m_maxPreferredLogicalWidth = 0;
-    RenderStyle* styleToUse = style();
+    const RenderStyle* styleToUse = style();
 
     if (styleToUse->logicalWidth().isFixed() && styleToUse->logicalWidth().value() >= 0)
         m_minPreferredLogicalWidth = m_maxPreferredLogicalWidth = adjustContentBoxLogicalWidthForBoxSizing(styleToUse->logicalWidth().value());