Add a dialog UI for Data Use accounting

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 dc031e1dfce4ee00f15812c208dcafac4a15ca65..c114cc2c270a7fd6fbc93627c7014a2618ddc076 100644
--- a/chrome/android/java/strings/android_chrome_strings.grd
+++ b/chrome/android/java/strings/android_chrome_strings.grd
@@ -778,7 +778,7 @@ To obtain new licenses, connect to the internet and play your downloaded content
 
       <!-- Data Use -->
       <message name="IDS_DATA_USE_TRACKING_STARTED_SNACKBAR_MESSAGE" desc="Message shown when data use tracking starts.">
-        Your data use is being tracked
+         Data use is being tracked
       </message>
       <message name="IDS_DATA_USE_TRACKING_STARTED_SNACKBAR_ACTION" desc="Button to learn more when data use tracking starts.">
         More
@@ -786,6 +786,15 @@ To obtain new licenses, connect to the internet and play your downloaded content
       <message name="IDS_DATA_USE_TRACKING_ENDED_TITLE" desc="Message shown when data use tracking has ended. Used by both the snackbar and dialog.">
         Data use tracking has ended
       </message>
+      <message name="IDS_DATA_USE_TRACKING_ENDED_MESSAGE" desc="Message shown on the dialog when data use tracking has ended.">
+        Your data use will no longer be measured.
+      </message>
+      <message name="IDS_DATA_USE_TRACKING_ENDED_CHECKBOX_MESSAGE" desc="Message shown to opt out of seeing dialogs when data use tracking has ended. The data use ended snackbar will be shown instead from then on.">

[newt (away), 2015/11/06 20:40:36]

These descriptions are for translators. Include details that they'll need, but
leave out irrelevant parts, such as "The data use ended snackbar will be shown
instead from then on."

[megjablon, 2015/11/06 23:41:40]

Done.

+        Don't ask me again

[newt (away), 2015/11/06 20:40:36]

use a curly apostrophe (’) instead of a straight apostrophe (')

[megjablon, 2015/11/06 23:41:40]

Done.

+      </message>
+      <message name="IDS_DATA_USE_TRACKING_ENDED_CONTINUE" desc="Continue button for the dialog shown when data use tracking has ended. When clicked, the page resumes loading.">
+        Continue
+      </message>
 
       <!-- About Chrome preferences -->
       <message name="IDS_PREFS_ABOUT_CHROME" desc="Title for the About Chrome page. [CHAR-LIMIT=32]">