Move toolbar_model_{impl,delegate}.{cc,h} to components/toolbar.

components/toolbar/BUILD.gn

Index: components/toolbar/BUILD.gn
diff --git a/components/toolbar/BUILD.gn b/components/toolbar/BUILD.gn
index 4e2ac01b694cc165518371244d98e5eb6f8e79e9..67cee0f04194e755a55e2f071e58fad8aa1522bd 100644
--- a/components/toolbar/BUILD.gn
+++ b/components/toolbar/BUILD.gn
@@ -8,11 +8,22 @@ source_set("toolbar") {
   sources = [
     "toolbar_model.cc",
     "toolbar_model.h",
+    "toolbar_model_delegate.h",
+    "toolbar_model_impl.cc",
+    "toolbar_model_impl.h",
   ]
 
   deps = [
     "//base",
+    "//components/google/core/browser",
+    "//components/prefs",
+    "//components/resources",
     "//components/security_state",
+    "//components/strings",
+    "//components/url_formatter",
+    "//net",
+    "//ui/base",
+    "//ui/gfx",
     "//url",
   ]
 }