[Android] Add support for a hung renderer dialog

chrome/android/java/strings/android_chrome_strings.grd

Index: chrome/android/java/strings/android_chrome_strings.grd
diff --git a/chrome/android/java/strings/android_chrome_strings.grd b/chrome/android/java/strings/android_chrome_strings.grd
index 603c43af1da51134d66466abcf318180e8d81dc9..f07abd4f3a40fde69a9cb3c7ed9f16549268a9f7 100644
--- a/chrome/android/java/strings/android_chrome_strings.grd
+++ b/chrome/android/java/strings/android_chrome_strings.grd
@@ -2242,6 +2242,16 @@ However, you aren’t invisible. Going incognito doesn’t hide your browsing fr
       <message name="IDS_HELP_CONTEXT_SAD_TAB" translateable="false">
         mobile_awsnap
       </message>
+      <!-- Unresponsive Renderer -->
+      <message name="IDS_UNRESPONSIVE_RENDERER" desc="An infobar message indicating to the user that the current page is unresponsive">
+        The page has become unresponsive. You can wait for it to become responsive or dismiss it.
+      </message>
+      <message name="IDS_UNRESPONSIVE_RENDERER_KILL" desc="An infobar button message for killing the unresponsive page">
+        Kill

[gone, 2015/08/14 21:05:43]

Probably want to use less forceful language.  Run this by UX, but maybe
initially:

"The page has become unresponsive.  Would you like to reload the page?"
"YES"  /  "MAYBE LATER"

[gone, 2015/08/14 21:07:28]

MAYBE LATER is kind of a joke but not really.  Desktop chrome asks if you want
to wait, right?

[jdduke (slow), 2015/08/14 21:22:19]

Chrome asks to wait or kill, I basically stole the language from them (though
the desktop dialog can show multiple frozen tabs so it's plural).

I definitely agree it'd be nice to have a softer tone here, chatting with rolfe@
next week about this.

+      </message>
+      <message name="IDS_UNRESPONSIVE_RENDERER_WAIT" desc="An infobar button message for waiting on the unresponsive page">
+        Wait
+      </message>
     </messages>
   </release>
 </grit>