Remove "Search by Image" feature on Chrome for Android.

chrome/android/java/strings/android_chrome_strings.grd

 <?xml version="1.0" encoding="UTF-8"?>
 
 <!-- android_chrome_strings.grd contains strings for Chrome for Android.
 
 FAQ:
   - How do I add, change, or remove a string?
       Just update this file.
   - Translations will happen automatically??
       Yes, indeed. Just add your string before the branch point and
       make the description good.
@@ skipping 1237 matching lines @@
       </message>
       <message name="IDS_CONTEXTMENU_OPEN_ORIGINAL_IMAGE_IN_NEW_TAB" desc="Context sensitive menu item for opening/viewing the original version of the selected image in a new tab. [CHAR-LIMIT=30]">
         Open original image in new tab
       </message>
       <message name="IDS_CONTEXTMENU_LOAD_IMAGES" desc="Context sensitive menu item for Data Saver low fidelity placeholder images that reloads the page with the original images. [CHAR-LIMIT=30]">
         Load images
       </message>
       <message name="IDS_CONTEXTMENU_LOAD_ORIGINAL_IMAGE" desc="Context sensitive menu item for Data Saver low fidelity placeholder images that loads the original version in place. [CHAR-LIMIT=30]">
         Load image
       </message>
-      <message name="IDS_CONTEXTMENU_SEARCH_WEB_FOR_IMAGE" desc="Context sensitive menu item for search-for-Image command in a new tab. [CHAR-LIMIT=30]">
-        Search <ph name="SEARCH_ENGINE">%1$s<ex>Google</ex></ph> for this image
-      </message>
       <message name="IDS_CONTEXTMENU_COPY_IMAGE" desc="Context sensitive menu item for copying an image to the clipboard. [CHAR-LIMIT=30]">
         Copy image
       </message>
       <message name="IDS_CONTEXTMENU_COPY_IMAGE_URL" desc="Context sensitive menu item for copying an image url to the clipboard. [CHAR-LIMIT=30]">
         Copy image URL
       </message>
       <message name="IDS_CONTEXTMENU_SAVE_VIDEO" desc="Context sensitive menu item for saving the selected video. [CHAR-LIMIT=30]">
         Save video
       </message>
 
@@ skipping 1022 matching lines @@
 
       <!-- Physical Web strings -->
       <message name="IDS_PHYSICAL_WEB_NOTIFICATION_TITLE" desc="Description of quantity of discovered URLs nearby.">
         {NUM_URLS, plural,
          =1 {1 URL nearby}
          other {# URLs nearby}}
       </message>
     </messages>
   </release>
 </grit>