cc: Add initial GPU-to-GPU copy rasterizer implementation.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index df437fcf347e680ca79c5b62ddad82a73248091c..00aef5216e6c34a9a57e551e08a6e3fed0df9ae4 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -6411,11 +6411,17 @@ Keep your key file in a safe place. You will need it to create new versions of y
       <message name="IDS_FLAGS_DELEGATED_RENDERER_DESCRIPTION" desc="Description of about:flags option for delegated renderer.">
         If enabled, the renderer delegates compositing to the browser, merging both compositing passes.
       </message>
-      <message name="IDS_FLAGS_MAP_IMAGE_NAME" desc="Name of about:flags option for map-image rasterizer.">
-        Map-image rasterizer (AKA Zero-copy)
+      <message name="IDS_FLAGS_ONE_COPY_NAME" desc="Name of about:flags option for one-copy rasterizer.">
+        Enable one-copy rasterizer
       </message>
-      <message name="IDS_FLAGS_MAP_IMAGE_DESCRIPTION" desc="Description of about:flags option for map-image rasterizer.">
-        If enabled, raster threads write directly to GPU memory.
+      <message name="IDS_FLAGS_ONE_COPY_DESCRIPTION" desc="Description of about:flags option for one-copy rasterizer.">
+        If enabled, raster threads write to GPU memory.
+      </message>
+      <message name="IDS_FLAGS_ZERO_COPY_NAME" desc="Name of about:flags option for zero-copy rasterizer.">
+        Enable zero-copy rasterizer
+      </message>
+      <message name="IDS_FLAGS_ZERO_COPY_DESCRIPTION" desc="Description of about:flags option for zero-copy rasterizer.">
+        If enabled, raster threads write directly to GPU memory associated with tiles.
       </message>
       <message name="IDS_FLAGS_MAX_TILES_FOR_INTEREST_AREA_NAME" desc="Name of about:flags option for maximum tiles for interest area.">
         Maximum tiles for interest area