cc: Add tile pool to tile manager.

cc/resources/tile.cc

Index: cc/resources/tile.cc
diff --git a/cc/resources/tile.cc b/cc/resources/tile.cc
index 9e0a593d0434c0fc38dd3f75b17b9bf8ad14cc85..c3bf1e6c014c9a46d177d70ec55903481a979397 100644
--- a/cc/resources/tile.cc
+++ b/cc/resources/tile.cc
@@ -11,29 +11,12 @@
 
 namespace cc {
 
-Tile::Id Tile::s_next_id_ = 0;
+Tile::Id Tile::s_next_id_ = 1;
 
-Tile::Tile(TileManager* tile_manager,
-           PicturePileImpl* picture_pile,
-           gfx::Size tile_size,
-           gfx::Rect content_rect,
-           gfx::Rect opaque_rect,
-           float contents_scale,
-           int layer_id,
-           int source_frame_number,
-           bool can_use_lcd_text)
+Tile::Tile(TileManager* tile_manager)
   : RefCountedManaged<Tile>(tile_manager),
     tile_manager_(tile_manager),
-    tile_size_(tile_size),
-    content_rect_(content_rect),
-    contents_scale_(contents_scale),
-    opaque_rect_(opaque_rect),
-    layer_id_(layer_id),
-    source_frame_number_(source_frame_number),
-    can_use_lcd_text_(can_use_lcd_text),
-    id_(s_next_id_++) {
-  set_picture_pile(picture_pile);
-}
+    id_(0) {}
 
 Tile::~Tile() {
   TRACE_EVENT_OBJECT_DELETED_WITH_ID(
@@ -42,6 +25,25 @@ Tile::~Tile() {
       "cc::Tile", this);
 }
 
+void Tile::Reset(PicturePileImpl* picture_pile,
+                 gfx::Size tile_size,
+                 gfx::Rect content_rect,
+                 gfx::Rect opaque_rect,
+                 float contents_scale,
+                 int layer_id,
+                 int source_frame_number,
+                 bool can_use_lcd_text) {
+  tile_size_ = tile_size;
+  content_rect_ = content_rect;
+  contents_scale_ = contents_scale;
+  opaque_rect_ = opaque_rect;
+  layer_id_ = layer_id;
+  source_frame_number_ = source_frame_number;
+  can_use_lcd_text_ = can_use_lcd_text;
+  set_picture_pile(picture_pile);
+  id_ = s_next_id_++;
+}
+
 void Tile::SetPriority(WhichTree tree, const TilePriority& priority) {
   if (priority == priority_[tree])
     return;