Add custom Polymer network icon element

ui/webui/resources/cr_element_resources.grdp

Index: ui/webui/resources/cr_element_resources.grdp
diff --git a/ui/webui/resources/cr_element_resources.grdp b/ui/webui/resources/cr_element_resources.grdp
new file mode 100644
index 0000000000000000000000000000000000000000..8f204ac2dfa0bdacda7f1cdc85f9921b661a9c1f
--- /dev/null
+++ b/ui/webui/resources/cr_element_resources.grdp
@@ -0,0 +1,21 @@
+<?xml version="1.0" encoding="utf-8"?>
+<grit-part>

[James Hawkins, 2015/02/06 21:37:37]

Using the term resources here is ambiguous, as I consider image to be a
resource.  Can we think of a better name?

[stevenjb, 2015/02/10 00:22:04]

I am following the existing pattern (i.e. polymer_resources) and what we did in
https://codereview.chromium.org/902053003/. If we want to change this we should
do so there.

+  <structure name="IDR_WEBUI_CR_ELEMENTS_NETWORK_ICON_CSS"
+             file="cr_elements/cr_network_icon/cr-network-icon.css" 
+             type="chrome_html" /> 
+  <structure name="IDR_WEBUI_CR_ELEMENTS_NETWORK_ICON_HTML"
+             file="cr_elements/cr_network_icon/cr-network-icon.html" 
+             type="chrome_html" /> 
+  <structure name="IDR_WEBUI_CR_ELEMENTS_NETWORK_ICON_JS"
+             file="cr_elements/cr_network_icon/cr-network-icon.js" 
+             type="chrome_html" /> 
+  <structure name="IDR_WEBUI_CR_ELEMENTS_ONC_TYPES_JS"
+             file="cr_elements/cr_onc/cr-onc-types.js" 
+             type="chrome_html" /> 
+  <structure name="IDR_WEBUI_CR_ELEMENTS_ONC_DATA_HTML"
+             file="cr_elements/cr_onc/cr-onc-data.html" 
+             type="chrome_html" /> 
+  <structure name="IDR_WEBUI_CR_ELEMENTS_ONC_DATA_JS"
+             file="cr_elements/cr_onc/cr-onc-data.js" 
+             type="chrome_html" /> 
+</grit-part>