Add missing values for screen percent width dimens

Protects against bootlooping in the event that developer
inadvertently changes DPI to unsupported value for device.

Use 0dp as it will not be mistaken for anything other
than a broken experience (cts test to validate device DPIs
so as to avoid shipping with this).

bug: b/37755288
Change-Id: Ie9f4aa0d6d226383824e06d28151e06038d0110b
diff --git a/core/res/res/values-watch/dimens_material.xml b/core/res/res/values-watch/dimens_material.xml
index 3c4904c..82c088b 100644
--- a/core/res/res/values-watch/dimens_material.xml
+++ b/core/res/res/values-watch/dimens_material.xml
@@ -44,4 +44,10 @@
     <dimen name="progress_bar_size_small">16dip</dimen>
     <dimen name="progress_bar_size_medium">32dip</dimen>
     <dimen name="progress_bar_size_large">64dip</dimen>
-</resources>
+
+    <!-- fallback for screen percentage widths -->
+    <dimen name="screen_percentage_05">0dp</dimen>
+    <dimen name="screen_percentage_10">0dp</dimen>
+    <dimen name="screen_percentage_12">0dp</dimen>
+    <dimen name="screen_percentage_15">0dp</dimen>
+  </resources>