Replace shared storage with USB storage.

Change-Id: Ic22670fbc915ba3cbb9dafc1d4f054218eff570f
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 9c9d30a..fc0d68b 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -585,23 +585,23 @@
     <!-- Title for a dialog informing the user that the download has failed -->
     <string name="download_failed_generic_dlg_title">Download unsuccessful</string>
     <!-- Dialog title [CHAR LIMIT=25] -->
-    <string name="download_no_sdcard_dlg_title" product="nosdcard">Shared storage unavailable</string>
+    <string name="download_no_sdcard_dlg_title" product="nosdcard">USB storage unavailable</string>
     <!-- Dialog title -->
     <string name="download_no_sdcard_dlg_title" product="default">No SD card</string>
     <!-- Dialog message [CHAR LIMIT=NONE] -->
-    <string name="download_no_sdcard_dlg_msg" product="nosdcard">Shared storage is required to download <xliff:g id="filename">%s</xliff:g>.</string>
+    <string name="download_no_sdcard_dlg_msg" product="nosdcard">USB storage is required to download <xliff:g id="filename">%s</xliff:g>.</string>
     <!-- Dialog message -->
     <string name="download_no_sdcard_dlg_msg" product="default">An SD card is required to download <xliff:g id="filename">%s</xliff:g>.</string>
     <!-- Title for a dialog informing the user that the SD card used for
             external storage is busy so they cannot download anything [CHAR LIMIT=25] -->
-    <string name="download_sdcard_busy_dlg_title" product="nosdcard">Shared storage unavailable</string>
+    <string name="download_sdcard_busy_dlg_title" product="nosdcard">USB storage unavailable</string>
     <!-- Title for a dialog informing the user that the SD card used for
             external storage is busy so they cannot download anything -->
     <string name="download_sdcard_busy_dlg_title" product="default">SD card unavailable</string>
     <!-- Message for a dialog informing the user that the SD card used for
             external storage is busy so they cannot download anything.  Informs
             the user how to enable SD card storage [CHAR LIMIT=NONE] -->
-    <string name="download_sdcard_busy_dlg_msg" product="nosdcard">The shared storage is busy. To allow downloads, select \"Turn off USB storage\" in the notification.</string>
+    <string name="download_sdcard_busy_dlg_msg" product="nosdcard">The USB storage is busy. To allow downloads, select \"Turn off USB storage\" in the notification.</string>
     <!-- Message for a dialog informing the user that the SD card used for
             external storage is busy so they cannot download anything.  Informs
             the user how to enable SD card storage -->