cc: Start using raster/eviction iterators.

cc/resources/tile_priority.h

Index: cc/resources/tile_priority.h
diff --git a/cc/resources/tile_priority.h b/cc/resources/tile_priority.h
index f8ac9c6c7b0e7a148e929b10a6ab8fbe0392cd24..d85dd3999334090580eebcc05426377e573f3b96 100644
--- a/cc/resources/tile_priority.h
+++ b/cc/resources/tile_priority.h
@@ -45,7 +45,6 @@ struct CC_EXPORT TilePriority {
 
   TilePriority()
       : resolution(NON_IDEAL_RESOLUTION),
-        required_for_activation(false),
         priority_bin(EVENTUALLY),
         distance_to_visible(std::numeric_limits<float>::infinity()) {}
 
@@ -53,7 +52,6 @@ struct CC_EXPORT TilePriority {
                PriorityBin bin,
                float distance_to_visible)
       : resolution(resolution),
-        required_for_activation(false),
         priority_bin(bin),
         distance_to_visible(distance_to_visible) {}
 
@@ -67,9 +65,6 @@ struct CC_EXPORT TilePriority {
     else
       resolution = NON_IDEAL_RESOLUTION;
 
-    required_for_activation =
-        active.required_for_activation || pending.required_for_activation;
-
     if (active.priority_bin < pending.priority_bin) {
       priority_bin = active.priority_bin;
       distance_to_visible = active.distance_to_visible;
@@ -88,8 +83,7 @@ struct CC_EXPORT TilePriority {
   bool operator ==(const TilePriority& other) const {
     return resolution == other.resolution &&
            priority_bin == other.priority_bin &&
-           distance_to_visible == other.distance_to_visible &&
-           required_for_activation == other.required_for_activation;
+           distance_to_visible == other.distance_to_visible;
   }
 
   bool operator !=(const TilePriority& other) const {
@@ -103,7 +97,6 @@ struct CC_EXPORT TilePriority {
   }
 
   TileResolution resolution;
-  bool required_for_activation;
   PriorityBin priority_bin;
   float distance_to_visible;
 };
@@ -122,11 +115,6 @@ enum TileMemoryLimitPolicy {
 
   // You're the only thing in town. Go crazy.
   ALLOW_ANYTHING = 3,  // Venti.
-
-  NUM_TILE_MEMORY_LIMIT_POLICIES = 4,
-
-  // NOTE: Be sure to update TreePriorityAsValue and kBinPolicyMap when adding
-  // or reordering fields.
 };
 scoped_ptr<base::Value> TileMemoryLimitPolicyAsValue(
     TileMemoryLimitPolicy policy);
@@ -135,8 +123,6 @@ enum TreePriority {
   SAME_PRIORITY_FOR_BOTH_TREES,
   SMOOTHNESS_TAKES_PRIORITY,
   NEW_CONTENT_TAKES_PRIORITY
-
-  // Be sure to update TreePriorityAsValue when adding new fields.
 };
 scoped_ptr<base::Value> TreePriorityAsValue(TreePriority prio);
 
@@ -157,17 +143,6 @@ class GlobalStateThatImpactsTilePriority {
 
   TreePriority tree_priority;
 
-  bool operator==(const GlobalStateThatImpactsTilePriority& other) const {
-    return memory_limit_policy == other.memory_limit_policy &&
-           soft_memory_limit_in_bytes == other.soft_memory_limit_in_bytes &&
-           hard_memory_limit_in_bytes == other.hard_memory_limit_in_bytes &&
-           num_resources_limit == other.num_resources_limit &&
-           tree_priority == other.tree_priority;
-  }
-  bool operator!=(const GlobalStateThatImpactsTilePriority& other) const {
-    return !(*this == other);
-  }
-
   scoped_ptr<base::Value> AsValue() const;
 };