Enable icu_use_data_file_flag on Android

chrome/android/shell/java/src/org/chromium/chrome/shell/ChromeShellApplication.java

Index: chrome/android/shell/java/src/org/chromium/chrome/shell/ChromeShellApplication.java
diff --git a/chrome/android/shell/java/src/org/chromium/chrome/shell/ChromeShellApplication.java b/chrome/android/shell/java/src/org/chromium/chrome/shell/ChromeShellApplication.java
index fb8d5967b9ddce50ce38b756f83b43f2b7011ff0..89bf869bd02ee3ab688c669abe11b6e99d95230c 100644
--- a/chrome/android/shell/java/src/org/chromium/chrome/shell/ChromeShellApplication.java
+++ b/chrome/android/shell/java/src/org/chromium/chrome/shell/ChromeShellApplication.java
@@ -22,10 +22,17 @@ import java.util.ArrayList;
  */
 public class ChromeShellApplication extends ChromiumApplication {
     private static final String PRIVATE_DATA_DIRECTORY_SUFFIX = "chromiumtestshell";
+    /**
+     * icudtl.dat provides ICU (i18n library) with all the necessary data
+     * for its operation. We used to link the data statically to our binary,
+     * but don't do that any more and need to install along with pak files.
+     * See src/third_party/icu/README.chromium.
+     */
     private static final String[] CHROME_MANDATORY_PAKS = {
         "en-US.pak",
         "resources.pak",
         "chrome_100_percent.pak",
+        "icudtl.dat",
     };
     private static final String COMMAND_LINE_FILE =
             "/data/local/tmp/chromium-testshell-command-line";