[Web Payments] Initial plumb of Payment Request dialog

Very crude plumbing of web payments Payment Request dialog box.
Does not handle all messages, and dialog box is nearly empty.

BUG=659648

Review-Url: https://codereview.chromium.org/2446093004
Cr-Commit-Position: refs/heads/master@{#433235}
diff --git a/chrome/browser/BUILD.gn b/chrome/browser/BUILD.gn
index 9d2f2ed..d2a88d3 100644
--- a/chrome/browser/BUILD.gn
+++ b/chrome/browser/BUILD.gn
@@ -1364,6 +1364,7 @@
     "//components/password_manager/core/browser",
     "//components/password_manager/core/common",
     "//components/password_manager/sync/browser",
+    "//components/payments:payment_request",
     "//components/policy:generated",
     "//components/policy/core/browser",
     "//components/policy/proto",
@@ -3528,6 +3529,7 @@
       "renderer_context_menu/spelling_options_submenu_observer.cc",
       "renderer_context_menu/spelling_options_submenu_observer.h",
     ]
+    deps += [ "//chrome/browser/payments:payments" ]
   }
 
   if (is_desktop_linux) {