[WeakMemoryCache] Remove LRU lists, prune order control and live/dead distinction

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

Index: third_party/WebKit/Source/core/fetch/ImageResource.cpp
diff --git a/third_party/WebKit/Source/core/fetch/ImageResource.cpp b/third_party/WebKit/Source/core/fetch/ImageResource.cpp
index e4c93592c8e0ac2361f84aab18df2f68f2c03fd8..47e20672fe408ba7bb60be8c90f33a164def65c4 100644
--- a/third_party/WebKit/Source/core/fetch/ImageResource.cpp
+++ b/third_party/WebKit/Source/core/fetch/ImageResource.cpp
@@ -481,13 +481,6 @@ void ImageResource::decodedSizeChangedTo(const blink::Image* image,
 }
 
 void ImageResource::didDraw(const blink::Image* image) {

[Nate Chapin, 2016/10/21 18:48:20]

Looks like this callback is ignored by all ImageObserver subclasses. We should
get rid fo it.

[hiroshige, 2016/10/24 10:35:28]

Created a separate patch: https://codereview.chromium.org/2447623002/
(to prevent this CL from becoming larger)

-  if (!image || image != m_image)
-    return;
-  // decodedSize() == 0 indicates that the image is decoded into
-  // DiscardableMemory, not in MemoryCache. So we don't need to call
-  // Resource::didAccessDecodedData() to update MemoryCache.
-  if (decodedSize() != 0)
-    Resource::didAccessDecodedData();
 }
 
 bool ImageResource::shouldPauseAnimation(const blink::Image* image) {