Only recycle and evict textures not in-use on the impl thread.

cc/CCPrioritizedTextureManager.h

 // Copyright 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef CCPrioritizedTextureManager_h
 #define CCPrioritizedTextureManager_h
 
 #include "base/basictypes.h"
 #include "CCPrioritizedTexture.h"
 #include "CCPriorityCalculator.h"
@@ skipping 58 matching lines @@
 
     void reduceMemory(CCResourceProvider*);
     void clearAllMemory(CCResourceProvider*);
 
     void acquireBackingTextureIfNeeded(CCPrioritizedTexture*, CCResourceProvider*);
 
     void registerTexture(CCPrioritizedTexture*);
     void unregisterTexture(CCPrioritizedTexture*);
     void returnBackingTexture(CCPrioritizedTexture*);
 
+    void updateBackingsPriorities();
+
 private:
     friend class CCPrioritizedTextureTest;
 
     enum EvictionPriorityPolicy {
         RespectManagerPriorityCutoff,
         DoNotRespectManagerPriorityCutoff,
     };
 
     // Compare textures. Highest priority first.
     static inline bool compareTextures(CCPrioritizedTexture* a, CCPrioritizedTexture* b)
@@ skipping 13 matching lines @@
         bool aboveCutoffB = b->wasAbovePriorityCutoffAtLastPriorityUpdate();
         if (!aboveCutoffA && aboveCutoffB)
             return true;
         if (aboveCutoffA && !aboveCutoffB)
             return false;
         return a < b;
     }
 
     CCPrioritizedTextureManager(size_t maxMemoryLimitBytes, int maxTextureSize, int pool);
 
-    void updateBackingsPriorities();
     void evictBackingsToReduceMemory(size_t limitBytes, EvictionPriorityPolicy, CCResourceProvider*);
     CCPrioritizedTexture::Backing* createBacking(IntSize, GC3Denum format, CCResourceProvider*);
     void evictBackingResource(CCPrioritizedTexture::Backing*, CCResourceProvider*);
 
 #if !ASSERT_DISABLED
     void assertInvariants();
 #endif
 
     size_t m_maxMemoryLimitBytes;
     unsigned m_priorityCutoff;
@@ skipping 16 matching lines @@
     // Set by the main thread when it adjust priorities in such a way that
     // the m_backings array's view of priorities is now out of date.
     bool m_needsUpdateBackingsPrioritites;
 
     DISALLOW_COPY_AND_ASSIGN(CCPrioritizedTextureManager);
 };
 
 }  // namespace cc
 
 #endif