cc: Use more explicit names for CHROMIUM_image based rasterizer implementations.

Note: thie will also change the name of some of our
raster_worker_pool_* performance tests.

BUG=
[email protected]

Review URL: https://codereview.chromium.org/584393003

Cr-Commit-Position: refs/heads/master@{#296208}
diff --git a/cc/trees/layer_tree_host_impl.h b/cc/trees/layer_tree_host_impl.h
index 64e2099..60fb579 100644
--- a/cc/trees/layer_tree_host_impl.h
+++ b/cc/trees/layer_tree_host_impl.h
@@ -519,8 +519,8 @@
   void EnforceZeroBudget(bool zero_budget);
 
   bool UsePendingTreeForSync() const;
-  bool UseZeroCopyTextureUpload() const;
-  bool UseOneCopyTextureUpload() const;
+  bool UseZeroCopyRasterizer() const;
+  bool UseOneCopyRasterizer() const;
 
   void ScrollViewportBy(gfx::Vector2dF scroll_delta);
   void AnimatePageScale(base::TimeTicks monotonic_time);