cc: Partial tile update for one-copy raster.

cc/resources/one_copy_tile_task_worker_pool.h

Index: cc/resources/one_copy_tile_task_worker_pool.h
diff --git a/cc/resources/one_copy_tile_task_worker_pool.h b/cc/resources/one_copy_tile_task_worker_pool.h
index 51996677623909aa88ee1aeb1b93f2d0559f5ba8..73315cf26e5e357f00a4e97ec78ace13935e99f6 100644
--- a/cc/resources/one_copy_tile_task_worker_pool.h
+++ b/cc/resources/one_copy_tile_task_worker_pool.h
@@ -52,15 +52,21 @@ class CC_EXPORT OneCopyTileTaskWorkerPool : public TileTaskWorkerPool,
 
   // Overridden from TileTaskClient:
   scoped_ptr<RasterBuffer> AcquireBufferForRaster(
-      const Resource* resource) override;
+      const TileTaskData& data) override;
   void ReleaseBufferForRaster(scoped_ptr<RasterBuffer> buffer) override;
 
-  // Playback raster source and schedule copy of |src| resource to |dst|
-  // resource. Returns a non-zero sequence number for this copy operation.
+  // Playback raster source and schedule copy of |raster_resource| resource to
+  // |data|'s resource. Returns a non-zero sequence number for this copy
+  // operation.
   CopySequenceNumber PlaybackAndScheduleCopyOnWorkerThread(
-      scoped_ptr<ResourceProvider::ScopedWriteLockGpuMemoryBuffer> write_lock,
-      scoped_ptr<ScopedResource> src,
-      const Resource* dst,
+      bool reusing_raster_resource,
+      scoped_ptr<ResourceProvider::ScopedWriteLockGpuMemoryBuffer>
+          raster_resource_write_lock,
+      scoped_ptr<ScopedResource> raster_resource,
+      scoped_ptr<ResourceProvider::ScopedReadLockGpuMemoryBuffer>
+          previous_raster_resource_read_lock,
+      scoped_ptr<ScopedResource> previous_raster_resource,
+      const TileTaskData& data,
       const RasterSource* raster_source,
       const gfx::Rect& rect,
       float scale);
@@ -80,15 +86,22 @@ class CC_EXPORT OneCopyTileTaskWorkerPool : public TileTaskWorkerPool,
   struct CopyOperation {
     typedef ScopedPtrDeque<CopyOperation> Deque;
 
-    CopyOperation(
-        scoped_ptr<ResourceProvider::ScopedWriteLockGpuMemoryBuffer> write_lock,
-        scoped_ptr<ScopedResource> src,
-        const Resource* dst);
+    CopyOperation(scoped_ptr<ResourceProvider::ScopedWriteLockGpuMemoryBuffer>
+                      raster_resource_write_lock,
+                  scoped_ptr<ScopedResource> raster_resource,
+                  scoped_ptr<ResourceProvider::ScopedReadLockGpuMemoryBuffer>
+                      previous_raster_resource_read_lock,
+                  scoped_ptr<ScopedResource> previous_raster_resource,
+                  const TileTaskData& data);
     ~CopyOperation();
 
-    scoped_ptr<ResourceProvider::ScopedWriteLockGpuMemoryBuffer> write_lock;
-    scoped_ptr<ScopedResource> src;
-    const Resource* dst;
+    scoped_ptr<ResourceProvider::ScopedWriteLockGpuMemoryBuffer>
+        raster_resource_write_lock;
+    scoped_ptr<ScopedResource> raster_resource;
+    scoped_ptr<ResourceProvider::ScopedReadLockGpuMemoryBuffer>
+        previous_raster_resource_read_lock;
+    scoped_ptr<ScopedResource> previous_raster_resource;
+    TileTaskData tile_task_data;
   };
 
   void OnTaskSetFinished(TaskSet task_set);