Replace screen capture confirmation infobar with a message box.

chrome/app/generated_resources.grd

 <?xml version="1.0" encoding="utf-8"?>
 
 <!--
 This file contains definitions of resources that will be translated for each
 locale.  The variables is_win, is_macosx, is_linux, and is_posix are available
 for making strings OS specific.  Other platform defines such as use_titlecase
 are declared in build/common.gypi.
 -->
 
 <grit base_dir="." latest_public_release="0" current_release="1"
@@ skipping 9905 matching lines @@
         A special security update for <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> was just applied; you should restart now for it to take effect (we'll restore your tabs).
       </message>
       <message name="IDS_CRITICAL_NOTIFICATION_RESTART" desc="The restart button label">
         OK - Restart now
       </message>
       <message name="IDS_CRITICAL_NOTIFICATION_DISMISS" desc="The dismiss button label">
         Don't restart
       </message>
 
       <!-- Screen Capture strings -->
+      <message name="IDS_MEDIA_SCREEN_CAPTURE_CONFIRMATION_TITLE" desc="Title for the prompt shown when screen capturing is requrested by an app.">
+        <ph name="APP_NAME">$1<ex>html5rocks.com</ex></ph> Screen Sharing Request
+      </message>
+      <message name="IDS_MEDIA_SCREEN_CAPTURE_CONFIRMATION_TEXT" desc="Text for the prompt shown when screen capturing is requrested by an app.">
+        Do you want <ph name="APP_NAME">$1<ex>html5rocks.com</ex></ph> to share your screen?
+      </message>
       <message name="IDS_MEDIA_SCREEN_CAPTURE_NOTIFICATION_TITLE" desc="Text shown on the button that stops screen capture.">
         Screen capture - <ph name="APP_NAME">$1<ex>Sharing App</ex></ph>
       </message>
       <message name="IDS_MEDIA_SCREEN_CAPTURE_NOTIFICATION_TEXT" desc="label used in screen capture notification UI to show the screen sharing status">
         <ph name="APP_NAME">$1<ex>Google Cast</ex></ph> is sharing your screen
       </message>
       <message name="IDS_MEDIA_SCREEN_CAPTURE_NOTIFICATION_STOP" desc="Text shown on the button that stops screen capture.">
         Stop
       </message>
 
@@ skipping 4962 matching lines @@
     <!-- Media Capture messages -->
     <message name="IDS_MEDIA_CAPTURE_AUDIO_AND_VIDEO" desc="Question asked on the info bar whenever a web page requests access to the computer's microphone and camera.">
       <ph name="HOST">$1<ex>html5rocks.com</ex></ph> wants to use your camera and microphone.
     </message>
     <message name="IDS_MEDIA_CAPTURE_AUDIO_ONLY" desc="Question asked on the info bar whenever a web page requests access to the computer's microphone.">
       <ph name="HOST">$1<ex>html5rocks.com</ex></ph> wants to use your microphone.
     </message>
     <message name="IDS_MEDIA_CAPTURE_VIDEO_ONLY" desc="Question asked on the info bar whenever a web page requests access to the computer's camera.">
       <ph name="HOST">$1<ex>html5rocks.com</ex></ph> wants to use your camera.
     </message>
-    <message name="IDS_MEDIA_CAPTURE_SCREEN" desc="Text on the info bar that's shown when screen capturing is requrested by the tab.">
-      <ph name="HOST">$1<ex>html5rocks.com</ex></ph> wants to capture the content of your screen.
-    </message>
     <message name="IDS_MEDIA_CAPTURE_ALLOW" desc="Label for a button that grants access to a web page, so they can use a camera and/or a microphone.">
       Allow
     </message>
     <message name="IDS_MEDIA_CAPTURE_DENY" desc="Label for a button that denies access to a web page, so they can use a camera and/or a microphone.">
       Deny
     </message>
 
     <!-- MediaStream capture status tray icon -->
     <message name="IDS_MEDIA_STREAM_STATUS_TRAY_TEXT_AUDIO_AND_VIDEO" desc="Tool tip for the capture status tray icon when microphone and camera are being used">
       <ph name="PRODUCT_NAME">$1<ex>Google Chrome</ex></ph> is using your camera and microphone.
@@ skipping 478 matching lines @@
 
     <structures fallback_to_english="true">
       <!-- Make sure these stay in sync with the structures in generated_resources.grd. -->
       <structure name="IDD_CHROME_FRAME_FIND_DIALOG" file="cf_resources.rc" type="dialog" >
       </structure>
       <structure name="IDD_CHROME_FRAME_READY_PROMPT" file="cf_resources.rc" type="dialog" >
       </structure>
     </structures>
   </release>
 </grit>