Add non-functional match for copied image to omnibox zero suggest

This CL adds a match to the omnibox zero suggest for an image copied to
the user's clipboard. The match is currently non-functional; it appears
but selecting it does nothing. This is because AutocompleteMatch
requires future work to allow it to handle matches that have more than
just a URL (image searching has post content as well).

Bug: 913958
Change-Id: Ie9ffd9a4e10caed3208310cf9d5ae38388519f98
Reviewed-on: https://chromium-review.googlesource.com/c/1393365
Commit-Queue: Robbie Gibson <[email protected]>
Reviewed-by: Justin Donnelly <[email protected]>
Cr-Commit-Position: refs/heads/master@{#621110}
diff --git a/components/omnibox_strings.grdp b/components/omnibox_strings.grdp
index 35ab62fe3..661d9db8 100644
--- a/components/omnibox_strings.grdp
+++ b/components/omnibox_strings.grdp
@@ -16,6 +16,12 @@
   <message name="IDS_COPIED_TEXT_FROM_CLIPBOARD" desc="The actual text the user copied, surrounded by quotation marks.">
     &quot;<ph name="TEXT">$1<ex>search string</ex></ph>&quot;
   </message>
+  <message name="IDS_IMAGE_FROM_CLIPBOARD" desc="The label in the omnibox dropdown explaining that the image has been extracted from the user's clipboard.">
+    Image you copied
+  </message>
+  <message name="IDS_SEARCH_WEB_FOR_IMAGE" desc="Description for performing a search by image">
+    Search <ph name="SEARCH_ENGINE">$1<ex>Google</ex></ph> for Image
+  </message>
   <message name="IDS_SECURE_CONNECTION_EV" desc="Short text shown in the location bar when the connection is secure with an EV cert.">
     <ph name="ORGANIZATION">$1<ex>Paypal Inc.</ex></ph> [<ph name="COUNTRY">$2<ex>US</ex></ph>]
   </message>