[MD Extensions] Begin adding error console page

Begin adding the error console page.
- Add a new page that can be navigated to by an "errors" button on an
  item card (position not definitive).
- Display extension errors.
- Support deleting a specific error.

This does not yet include support for displaying the erroneous code or
for opening up dev tools directly from the page.

BUG=529395
CQ_INCLUDE_TRYBOTS=master.tryserver.chromium.linux:closure_compilation

Review-Url: https://codereview.chromium.org/2414573002
Cr-Commit-Position: refs/heads/master@{#425876}
diff --git a/chrome/browser/browser_resources.grd b/chrome/browser/browser_resources.grd
index 9eb013f..da861da 100644
--- a/chrome/browser/browser_resources.grd
+++ b/chrome/browser/browser_resources.grd
@@ -163,6 +163,8 @@
         <include name="IDR_MD_EXTENSIONS_DETAIL_VIEW_JS" file="resources\md_extensions\detail_view.js" type="BINDATA" />
         <include name="IDR_MD_EXTENSIONS_DROP_OVERLAY_HTML" file="resources\md_extensions\drop_overlay.html" type="BINDATA" />
         <include name="IDR_MD_EXTENSIONS_DROP_OVERLAY_JS" file="resources\md_extensions\drop_overlay.js" type="BINDATA" />
+        <include name="IDR_MD_EXTENSIONS_ERROR_PAGE_HTML" file="resources\md_extensions\error_page.html" flattenhtml="true" type="BINDATA" />
+        <include name="IDR_MD_EXTENSIONS_ERROR_PAGE_JS" file="resources\md_extensions\error_page.js" type="BINDATA" />
         <include name="IDR_MD_EXTENSIONS_KEYBOARD_SHORTCUTS_HTML" file="resources\md_extensions\keyboard_shortcuts.html" type="BINDATA" />
         <include name="IDR_MD_EXTENSIONS_KEYBOARD_SHORTCUTS_JS" file="resources\md_extensions\keyboard_shortcuts.js" type="BINDATA" />
         <include name="IDR_MD_EXTENSIONS_MANAGER_HTML" file="resources\md_extensions\manager.html" type="BINDATA" />