Add new string for "Open original image" feature.

chrome/app/generated_resources.grd

Index: chrome/app/generated_resources.grd
diff --git a/chrome/app/generated_resources.grd b/chrome/app/generated_resources.grd
index 30a933ac87eef306a29f98359ac80f5a0562297a..d2a2bc2551c245598c0cf65160a4b000d9e8441d 100644
--- a/chrome/app/generated_resources.grd
+++ b/chrome/app/generated_resources.grd
@@ -767,7 +767,10 @@ Psst! Incognito mode <ph name="SHORTCUT_KEY">$1<ex>(Ctrl+Shift+N)</ex></ph> may
           <message name="IDS_CONTENT_CONTEXT_OPENIMAGENEWTAB" desc="The name of the Open Image in New Tab command in the content area context menu">
             Open &amp;image in new tab
           </message>
-
+          <message name="IDS_CONTENT_CONTEXT_OPEN_ORIGINAL_IMAGE_NEW_TAB" desc="The name of the Open Original Image in New Tab command in the content area context menu">
+            Open original &amp;image in new tab
+          </message>
+          
           <message name="IDS_CONTENT_CONTEXT_LOOP" desc="The name of the Loop command for audio and video playback in the content area context menu">
             &amp;Loop
           </message>
@@ -967,6 +970,9 @@ Psst! Incognito mode <ph name="SHORTCUT_KEY">$1<ex>(Ctrl+Shift+N)</ex></ph> may
           <message name="IDS_CONTENT_CONTEXT_OPENIMAGENEWTAB" desc="In Title Case: The name of the Open Image in New Tab command in the content area context menu">
             Open &amp;Image in New Tab
           </message>
+          <message name="IDS_CONTENT_CONTEXT_OPEN_ORIGINAL_IMAGE_NEW_TAB" desc="In Title Case: The name of the Open Original Image in New Tab command in the content area context menu">
+            Open Original &amp;Image in New Tab
+          </message>
 
           <message name="IDS_CONTENT_CONTEXT_LOOP" desc="In Title Case: The name of the Loop command for audio and video playback in the content area context menu">
             &amp;Loop