Move sandboxed_unpacker.{h,cc} from chrome/ to extensions/

extensions/extensions_strings.grd

Index: extensions/extensions_strings.grd
diff --git a/extensions/extensions_strings.grd b/extensions/extensions_strings.grd
index e4ab2c4867aef8e303e71f4032fa95d7e106232a..b15ed35658d658c0eecc380f5aadf05071658041 100644
--- a/extensions/extensions_strings.grd
+++ b/extensions/extensions_strings.grd
@@ -440,6 +440,29 @@
         Communicate with cooperating websites
       </message>
 
+      <!-- Install related messages. Please keep alphabetized. -->
+      <message name="IDS_EXTENSION_INSTALL_PROCESS_CRASHED" desc="Error message in case package fails to install because a utility process crashed.">
+        Could not install package because a utility process crashed. Try restarting Chrome and trying again.
+      </message>
+      <message name="IDS_EXTENSION_PACKAGE_ERROR_CODE" desc="Error message in cases where we fail to install the extension because the crx file is invalid. For example, because the crx header or signature is invalid.">
+        Package is invalid: '<ph name="ERROR_CODE">$1<ex>error</ex></ph>'.
+      </message>
+      <message name="IDS_EXTENSION_PACKAGE_ERROR_MESSAGE" desc="The cases where we get an error message string back from some other component. The message might be in English, but these are typically developer errors, and the extension SDK is English.">
+        Package is invalid. Details: '<ph name="ERROR_MESSAGE">$1<ex>error</ex></ph>'.
+      </message>
+      <message name="IDS_EXTENSION_PACKAGE_INSTALL_ERROR" desc="Error message in case package fails to install because of some problem with the filesystem.">
+        Could not install package: '<ph name="ERROR_CODE">$1<ex>error</ex></ph>'
+      </message>
+      <if expr="is_win">
+        <message name="IDS_EXTENSION_UNPACK_FAILED" desc="On windows, it is possible to mount a disk without the root of that disk having a drive letter.  The sandbox does not support this. See crbug/49530 .">
+          Can not unpack extension.  To safely unpack an extension, there must be a path to your profile directory that starts with a drive letter and does not contain a junction, mount point, or symlink.  No such path exists for your profile.
+        </message>
+      </if>
+      <if expr="not is_win">
+        <message name="IDS_EXTENSION_UNPACK_FAILED" desc="">
+          Can not unpack extension.  To safely unpack an extension, there must be a path to your profile directory that does not contain a symlink.  No such path exists for your profile.
+        </message>
+      </if>
     </messages>
   </release>
 </grit>