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

mojo/public/dart/third_party/barback/example/aggregate_transformer/lib/recipes-grammas/winter-squash-pie-recipe.html

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+<h2><a name="winter-squash-pie">Winter Squash Pie</a></h2>
+<ul>
+<li>2 eggs</li>
+<li>3/4 cup brown sugar</li>
+<li>1 tsp cinnamon</li>
+<li>1/4 tsp ginger</li>
+<li>1/4 tsp cardamom</li>
+<li>1 cup evaporated milk</li>
+<li>1/2 cup cream</li>
+<li>1-1/2 cups winter squash (such as pumpkin), pureed</li>
+<li>1 9" (single) pie crust</li>
+</ul>
+<p>
+Mix eggs and sugar together. Add pumpkin and mix. Add salt and spices.
+Slowly stir in evaporated milk, and then the cream.</p>
+<p>
+Pour into un nbaked pie crust. Bake in a preheated 425&deg;F oven
+for 15 minutes. Turn heat down to 325&degF and bake another 45 minutes
+until center is firm.</p>
+<p>
+Remove from oven and cool on a rack before serving.</p>
+<p>
+Serve with whipped cream.</p>