cc: Partial tile update for one-copy raster.

cc/test/fake_tile_manager.cc

Index: cc/test/fake_tile_manager.cc
diff --git a/cc/test/fake_tile_manager.cc b/cc/test/fake_tile_manager.cc
index 659a9068b22f3d5a444ffe8dda7c20d172515871..bf44d2e7a9a19d945a83c23951437f4944a53b48 100644
--- a/cc/test/fake_tile_manager.cc
+++ b/cc/test/fake_tile_manager.cc
@@ -51,7 +51,9 @@ class FakeTileTaskRunnerImpl : public TileTaskRunner, public TileTaskClient {
 
   // Overridden from TileTaskClient:
   scoped_ptr<RasterBuffer> AcquireBufferForRaster(
-      const Resource* resource) override {
+      const Resource* resource,
+      uint64_t new_content_id,
+      uint64_t previous_content_id) override {
     return nullptr;
   }
   void ReleaseBufferForRaster(scoped_ptr<RasterBuffer> buffer) override {}