gpu: Rename Capabilities::map_image to Capabilities::image.

cc/output/delegating_renderer.cc

Index: cc/output/delegating_renderer.cc
diff --git a/cc/output/delegating_renderer.cc b/cc/output/delegating_renderer.cc
index de6c2b6129e2e907bcf34c8457cf3bec0fe7930c..5a92019d6da787f4f064499bf59026e6a88ffbc7 100644
--- a/cc/output/delegating_renderer.cc
+++ b/cc/output/delegating_renderer.cc
@@ -45,7 +45,7 @@ DelegatingRenderer::DelegatingRenderer(RendererClient* client,
 
   if (!output_surface_->context_provider()) {
     capabilities_.using_shared_memory_resources = true;
-    capabilities_.using_map_image = true;
+    capabilities_.using_image = true;
   } else {
     const ContextProvider::Capabilities& caps =
         output_surface_->context_provider()->ContextCapabilities();
@@ -53,7 +53,7 @@ DelegatingRenderer::DelegatingRenderer(RendererClient* client,
     DCHECK(!caps.gpu.iosurface || caps.gpu.texture_rectangle);
 
     capabilities_.using_egl_image = caps.gpu.egl_image_external;
-    capabilities_.using_map_image = caps.gpu.map_image;
+    capabilities_.using_image = caps.gpu.image;
 
     capabilities_.allow_rasterize_on_demand = false;
   }