Componentize IDS_SESSION_CRASHED_* to allow sharing with iOS.

components/sessions_strings.grdp

Index: components/sessions_strings.grdp
diff --git a/components/sessions_strings.grdp b/components/sessions_strings.grdp
new file mode 100644
index 0000000000000000000000000000000000000000..665d5e31b5d4cf2d958ce60630e9126670fa450f
--- /dev/null
+++ b/components/sessions_strings.grdp
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<grit-part>
+
+  <message name="IDS_SESSION_CRASHED_VIEW_RESTORE_BUTTON" desc="Title of the restore button in the session crashed view.">
+    Restore
+  </message>
+  <if expr="_google_chrome">

[Peter Kasting, 2016/02/17 22:14:20]

Is this the pattern we've been using elsewhere?  I'm concerned that it's not
parallel to the "one file per differently-named port" solution, primarily since
I don't understand enough about why that solution was implemented to know if
this poses problems for other Chromium-based named products or something.  Did
the l10n people sign off on this methodology?

[sdefresne, 2016/02/18 09:34:22]

Actually, components strings currently uses both. See
components/components_chromium_strings.grd &
components/components_google_chrome_strings.grd. Moved the branded string to
those files instead (since as you pointed out this is better for other products
based on Chromium).

+    <message name="IDS_SESSION_CRASHED_VIEW_MESSAGE" desc="Message shown when the last session didn't exit cleanly.">
+      Chrome didn't shut down correctly.
+    </message>
+  </if>
+  <if expr="not _google_chrome">
+    <message name="IDS_SESSION_CRASHED_VIEW_MESSAGE" desc="Message shown when the last session didn't exit cleanly.">
+      Chromium didn't shut down correctly.
+    </message>
+  </if>
+
+</grit-part>