Stop running pub get at gclient sync time and fix build bugs

tonic/BUILD.gn

Index: tonic/BUILD.gn
diff --git a/tonic/BUILD.gn b/tonic/BUILD.gn
index 5b72df7e629d95e940fd9db422193fe6aa7c3093..35ea0ec5d680fcc134cddd8a37ef594eb82cf278 100644
--- a/tonic/BUILD.gn
+++ b/tonic/BUILD.gn
@@ -68,15 +68,15 @@ source_set("tonic") {
   ]
 
   public_deps = [
-    "//dart/runtime:libdart",
-    "//dart/runtime/vm:libdart_platform",
+    "//mojo/public/third_party/dart/runtime:libdart",
+    "//mojo/public/third_party/dart/runtime/vm:libdart_platform",
   ]
 
   public_configs = [ ":tonic_config" ]
 }
 
 config("tonic_config") {
-  include_dirs = [ "//dart/runtime" ]
+  include_dirs = [ "//mojo/public/third_party/dart/runtime" ]
 }
 
 # TODO(johnmccutchan): Move these sources into sky_engine and remove this.
@@ -99,7 +99,7 @@ source_set("tonic_wtf") {
   ]
 
   public_deps = [
-    "//dart/runtime:libdart",
-    "//dart/runtime/vm:libdart_platform",
+    "//mojo/public/third_party/dart/runtime:libdart",
+    "//mojo/public/third_party/dart/runtime/vm:libdart_platform",
   ]
 }