Let padding change always trigger layout and full paint invalidation

third_party/WebKit/Source/core/style/ComputedStyle.cpp

Index: third_party/WebKit/Source/core/style/ComputedStyle.cpp
diff --git a/third_party/WebKit/Source/core/style/ComputedStyle.cpp b/third_party/WebKit/Source/core/style/ComputedStyle.cpp
index 08720ae4b90cfe764ad1910260a44adf9e7d3fff..e2f97ba2fa332c0e8250d38a1ed1b37ddbc91581 100644
--- a/third_party/WebKit/Source/core/style/ComputedStyle.cpp
+++ b/third_party/WebKit/Source/core/style/ComputedStyle.cpp
@@ -638,6 +638,9 @@ bool ComputedStyle::diffNeedsFullLayoutAndPaintInvalidation(
         borderBottomWidth() != other.borderBottomWidth() ||
         borderRightWidth() != other.borderRightWidth())
       return true;
+
+    if (m_surround->padding != other.m_surround->padding)
+      return true;
   }
 
   if (m_rareNonInheritedData.get() != other.m_rareNonInheritedData.get()) {
@@ -882,11 +885,6 @@ bool ComputedStyle::diffNeedsFullLayout(const ComputedStyle& other) const {
       position() != other.position())
     return true;
 
-  if (m_surround.get() != other.m_surround.get()) {
-    if (m_surround->padding != other.m_surround->padding)
-      return true;
-  }
-
   if (m_rareNonInheritedData.get() != other.m_rareNonInheritedData.get()) {
     if (m_rareNonInheritedData->m_alignContent !=
             other.m_rareNonInheritedData->m_alignContent ||