cc: Eliminate tile.h's dependency on tile_manager.h

cc/resources/raster_worker_pool.h

Index: cc/resources/raster_worker_pool.h
diff --git a/cc/resources/raster_worker_pool.h b/cc/resources/raster_worker_pool.h
index 31013765b6ccfb6870bed7ef04602d1a1fc4beb9..7b910994749b356e6b37faaf8c590ffebd761a9c 100644
--- a/cc/resources/raster_worker_pool.h
+++ b/cc/resources/raster_worker_pool.h
@@ -10,7 +10,7 @@
 #include "base/containers/hash_tables.h"
 #include "cc/debug/rendering_stats_instrumentation.h"
 #include "cc/resources/picture_pile_impl.h"
-#include "cc/resources/resource_provider.h"
+#include "cc/resources/raster_mode.h"
 #include "cc/resources/tile_priority.h"
 #include "cc/resources/worker_pool.h"
 
@@ -24,6 +24,7 @@ namespace cc {
 class PicturePileImpl;
 class PixelBufferRasterWorkerPool;
 class Resource;
+class ResourceProvider;
 
 namespace internal {
 
@@ -77,31 +78,6 @@ template <> struct hash<cc::internal::RasterWorkerPoolTask*> {
 
 namespace cc {
 
-// Low quality implies no lcd test; high quality implies lcd text.
-// Note that the order of these matters. It is organized in the order in which
-// we can promote tiles. That is, we always move from higher number enum to
-// lower number: low quality can be re-rastered as high quality with or without
-// LCD text; high quality LCD can only move to high quality no LCD mode. We
-// currently don't support moving from no LCD to LCD high quality.
-// TODO(vmpstr): Find a better place for this.
-enum RasterMode {
-  HIGH_QUALITY_NO_LCD_RASTER_MODE = 0,
-  HIGH_QUALITY_RASTER_MODE = 1,
-  LOW_QUALITY_RASTER_MODE = 2,
-  NUM_RASTER_MODES = 3
-};
-
-// Data that is passed to raster tasks.
-// TODO(vmpstr): Find a better place for this.
-struct RasterTaskMetadata {
-    scoped_ptr<base::Value> AsValue() const;
-    bool is_tile_in_pending_tree_now_bin;
-    TileResolution tile_resolution;
-    int layer_id;
-    const void* tile_id;
-    int source_frame_number;
-};
-
 class CC_EXPORT RasterWorkerPoolClient {
  public:
   virtual bool ShouldForceTasksRequiredForActivationToComplete() const = 0;
@@ -205,13 +181,18 @@ class CC_EXPORT RasterWorkerPool : public WorkerPool {
   // even if they later get canceled by another call to ScheduleTasks().
   virtual void ScheduleTasks(RasterTask::Queue* queue) = 0;
 
+  // TODO(vmpstr): Figure out an elegant way to not pass this many parameters.
   static RasterTask CreateRasterTask(
       const Resource* resource,
       PicturePileImpl* picture_pile,
       gfx::Rect content_rect,
       float contents_scale,
       RasterMode raster_mode,
-      const RasterTaskMetadata& metadata,
+      bool is_tile_in_pending_tree_now_bin,
+      TileResolution tile_resolution,
+      int layer_id,
+      const void* tile_id,
+      int source_frame_number,
       RenderingStatsInstrumentation* rendering_stats,
       const RasterTask::Reply& reply,
       Task::Set* dependencies);