Add WebView-specific whitelist for crash keys.

android_webview/javatests/src/org/chromium/android_webview/test/AwDebugTest.java

Index: android_webview/javatests/src/org/chromium/android_webview/test/AwDebugTest.java
diff --git a/android_webview/javatests/src/org/chromium/android_webview/test/AwDebugTest.java b/android_webview/javatests/src/org/chromium/android_webview/test/AwDebugTest.java
index 79c0589fec38116f62d03c4ea38d6bd88191bccd..be18ccf8d5e57136dc541a6986b1d444b19bd8c5 100644
--- a/android_webview/javatests/src/org/chromium/android_webview/test/AwDebugTest.java
+++ b/android_webview/javatests/src/org/chromium/android_webview/test/AwDebugTest.java
@@ -7,10 +7,14 @@ package org.chromium.android_webview.test;
 import android.support.test.filters.SmallTest;
 
 import org.chromium.android_webview.AwDebug;
+import org.chromium.base.Log;
 import org.chromium.base.test.util.Feature;
 import org.chromium.base.test.util.parameter.ParameterizedTest;
 
 import java.io.File;
+import java.io.FileInputStream;
+import java.io.IOException;
+import java.util.Scanner;
 
 /**
  * A test suite for AwDebug class.
@@ -18,6 +22,12 @@ import java.io.File;
 // Only works in single-process mode, crbug.com/568825.
 @ParameterizedTest.Set
 public class AwDebugTest extends AwTestBase {
+    private static final String TAG = "cr_AwDebugTest";
+    private static final String DEBUG_KEY = "AW_DEBUG_KEY";
+    private static final String DEBUG_KEY_LINE =
+            "Content-Disposition: form-data; name=\"" + DEBUG_KEY + "\"";
+    private static final String DEBUG_VALUE = "AW_DEBUG_VALUE";
+
     @SmallTest
     @Feature({"AndroidWebView", "Debug"})
     public void testDump() throws Throwable {
@@ -30,4 +40,48 @@ public class AwDebugTest extends AwTestBase {
             assertTrue(f.delete());
         }
     }
+
+    @SmallTest
+    @Feature({"AndroidWebView", "Debug"})
+    public void testDumpContainsWhitelistedKey() throws Throwable {
+        File f = File.createTempFile("dump", ".dmp");
+        try {
+            assertTrue(AwDebug.dumpWithoutCrashing(f));
+            String dumpContents = readEntireFile(f);
+            Log.e(TAG, "dump contents: \n" + dumpContents);
+            // We are expecting the following:
+            //
+            // Content-Disposition: form-data; name="AW_DEBUG_KEY"
+            // AW_DEBUG_VALUE
+            //
+            assertTrue(dumpContents.contains(DEBUG_KEY_LINE));
+            int debug_key_index = dumpContents.indexOf(DEBUG_KEY_LINE);
+            // Read the word after the line containing the debug key
+            Scanner debugValueScanner =
+                    new Scanner(dumpContents.substring(debug_key_index + DEBUG_KEY_LINE.length()));
+            assertTrue(debugValueScanner.hasNext());
+            // TODO this should return the next word in the string - does it?
+            String actualDebugValue = debugValueScanner.next();
+            assertEquals(DEBUG_VALUE, actualDebugValue);
+        } finally {
+            assertTrue(f.delete());
+        }
+    }
+
+    @SmallTest
+    @Feature({"AndroidWebView", "Debug"})
+    public void testDumpDoesNotContainNonWhitelistedKey() throws Throwable {
+        // TODO
+    }
+
+    private static String readEntireFile(File file) throws IOException {
+        FileInputStream fileInputStream = new FileInputStream(file);
+        try {
+            byte[] data = new byte[(int) file.length()];
+            fileInputStream.read(data);
+            return new String(data);
+        } finally {
+            fileInputStream.close();
+        }
+    }
 }