Mocha adapter for Polymer browser tests.

chrome/browser/browser_resources.grd

Index: chrome/browser/browser_resources.grd
diff --git a/chrome/browser/browser_resources.grd b/chrome/browser/browser_resources.grd
index 8f4d696f6d843516a09190c933c87e2e10b97660..4329d17f5e0ee006ef669ad64b5bd072e1b08376 100644
--- a/chrome/browser/browser_resources.grd
+++ b/chrome/browser/browser_resources.grd
@@ -206,6 +206,8 @@
       <include name="IDR_LOCAL_NTP_DESIGN_JS" file="resources\local_ntp\local_ntp_design.js" flattenhtml="true" type="BINDATA" />
       <include name="IDR_LOCAL_STATE_HTML" file="resources\local_state\local_state.html" flattenhtml="true" allowexternalscript="true" type="BINDATA" />
       <include name="IDR_LOCAL_STATE_JS" file="resources\local_state\local_state.js" flattenhtml="true" allowexternalscript="true" type="BINDATA" />
+      <include name="IDR_MOCHA_ADAPTER_JS" file="..\test\data\webui\mocha_adapter.js" flattenhtml="true" type="chrome_html" />
+      <include name="IDR_MOCHA_JS" file="..\..\third_party\mocha\mocha.js" flattenhtml="true" type="chrome_html" />

[michaelpg, 2015/05/05 12:23:54]

I don't feel good about adding these to browser_resources. What is the
alternative?

These can't just be GEN_INCLUDE'd in tests because they will fail to eval in the
gen step. Mocha requires an actual live browser.

[stevenjb, 2015/05/05 22:30:28]

Yeah, this seems weird, but I don't know what the alternative would be. +dbeam@,
+jhawkins@, they may have ideas here.

[michaelpg, 2015/05/14 19:08:48]

We could exclude these from branding=Chrome builds, so mocha.js isn't included
in released versions. But it would still be baked into Chromium, which we don't
really want.

We could set up a server in the browser test and serve these files through that,
but then we run into CSP restrictions.

Dan or James, any suggestions or tips?

       <include name="IDR_MOST_VISITED_IFRAME_CSS" file="resources\local_ntp\most_visited_iframe.css" type="BINDATA" />
       <include name="IDR_MOST_VISITED_TITLE_HTML" file="resources\local_ntp\most_visited_title.html" type="BINDATA" />
       <include name="IDR_MOST_VISITED_TITLE_CSS" file="resources\local_ntp\most_visited_title.css" type="BINDATA" />