Report the size of |CSSStyleSheetResource::m_decodedSheetText| as decoded size

third_party/WebKit/Source/core/fetch/CSSStyleSheetResource.cpp

Index: third_party/WebKit/Source/core/fetch/CSSStyleSheetResource.cpp
diff --git a/third_party/WebKit/Source/core/fetch/CSSStyleSheetResource.cpp b/third_party/WebKit/Source/core/fetch/CSSStyleSheetResource.cpp
index 7f26ff82e2f1300f289e7edda3d99cbf4b8b64e7..635457845497f48faa4aad3af553de693aba3864 100644
--- a/third_party/WebKit/Source/core/fetch/CSSStyleSheetResource.cpp
+++ b/third_party/WebKit/Source/core/fetch/CSSStyleSheetResource.cpp
@@ -77,6 +77,9 @@ void CSSStyleSheetResource::setParsedStyleSheetCache(
   m_parsedStyleSheetCache = newSheet;
   if (m_parsedStyleSheetCache)
     m_parsedStyleSheetCache->setReferencedFromResource(this);
+
+  // Updates the decoded size to take parsed stylesheet cache into account.
+  updateDecodedSize();
 }
 
 DEFINE_TRACE(CSSStyleSheetResource) {
@@ -136,6 +139,7 @@ void CSSStyleSheetResource::checkNotify() {
   // Decode the data to find out the encoding and cache the decoded sheet text.
   if (data()) {
     m_decodedSheetText = decodedText();
+    updateDecodedSize();

[hajimehoshi, 2016/11/07 11:11:34]

I'd make setDecodedSheetText and call updateDecodedSize there

[hiroshige, 2016/11/07 11:41:20]

Done.

   }
 
   ResourceClientWalker<StyleSheetResourceClient> w(clients());
@@ -151,6 +155,7 @@ void CSSStyleSheetResource::checkNotify() {
   // Note that LinkStyle::setCSSStyleSheet can be called from didAddClient too,
   // but is safe as we should have a cached ResourceIntegrityDisposition.
   clearData();
+  setEncodedSizeMemoryUsage(0);
 }
 
 void CSSStyleSheetResource::destroyDecodedDataIfPossible() {
@@ -158,11 +163,11 @@ void CSSStyleSheetResource::destroyDecodedDataIfPossible() {
     return;
 
   setParsedStyleSheetCache(nullptr);
-  setDecodedSize(0);
 }
 
 void CSSStyleSheetResource::destroyDecodedDataForFailedRevalidation() {
   m_decodedSheetText = String();
+  updateDecodedSize();
   destroyDecodedDataIfPossible();
 }
 
@@ -217,7 +222,13 @@ void CSSStyleSheetResource::saveParsedStyleSheet(StyleSheetContents* sheet) {
     return;
   }
   setParsedStyleSheetCache(sheet);
-  setDecodedSize(m_parsedStyleSheetCache->estimatedSizeInBytes());
+}
+
+void CSSStyleSheetResource::updateDecodedSize() {
+  size_t decodedSize = m_decodedSheetText.charactersSizeInBytes();
+  if (m_parsedStyleSheetCache)
+    decodedSize += m_parsedStyleSheetCache->estimatedSizeInBytes();
+  setDecodedSize(decodedSize);
 }
 
 }  // namespace blink