DO NOT COMMIT: Experimental removal of encoded image data

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

Index: third_party/WebKit/Source/core/fetch/MemoryCache.cpp
diff --git a/third_party/WebKit/Source/core/fetch/MemoryCache.cpp b/third_party/WebKit/Source/core/fetch/MemoryCache.cpp
index a0de01441465ee86da4cb6e7bafad6c0ef50e6d1..65a9b21b32677c5a92fbba4a70b0c519703810d8 100644
--- a/third_party/WebKit/Source/core/fetch/MemoryCache.cpp
+++ b/third_party/WebKit/Source/core/fetch/MemoryCache.cpp
@@ -288,8 +288,12 @@ void MemoryCache::pruneDeadResources(PruneStrategy strategy)
     size_t capacity = deadCapacity();
     if (strategy == MaximalPrune)
         capacity = 0;
-    if (!m_deadSize || (capacity && m_deadSize <= capacity))
-        return;
+
+    // Now pruneDeadResources needs to check all resources when the strategy is Maximal
+    if (strategy != MaximalPrune) {
+        if (!m_deadSize || (capacity && m_deadSize <= capacity))
+            return;
+    }
 
     size_t targetSize = static_cast<size_t>(capacity * cTargetPrunePercentage); // Cut by a percentage to avoid immediately pruning again.
 
@@ -315,6 +319,12 @@ void MemoryCache::pruneDeadResources(PruneStrategy strategy)
                 continue;
             }
 
+            if (strategy == MaximalPrune) {
+                if (!resource->isPreloaded() && resource->isLoaded() && resource->isReloadable()) {
+                    resource->myPrune();
+                }
+            }
+
             if (!resource->isAlive() && !resource->isPreloaded() && resource->isLoaded()) {
                 // Destroy our decoded data. This will remove us from
                 // m_liveDecodedResources, and possibly move us to a different