Allow data URL > 2MB for loadDataWithBaseURL

net/android/java/src/org/chromium/net/GURLUtils.java

Index: net/android/java/src/org/chromium/net/GURLUtils.java
diff --git a/net/android/java/src/org/chromium/net/GURLUtils.java b/net/android/java/src/org/chromium/net/GURLUtils.java
index 719ddeabb2343a85613fe7daf6db649112fb8cca..a7478870bb5e1a1c8350d42f04d9c22a01ceeda4 100644
--- a/net/android/java/src/org/chromium/net/GURLUtils.java
+++ b/net/android/java/src/org/chromium/net/GURLUtils.java
@@ -33,6 +33,25 @@ public final class GURLUtils {
         return nativeGetScheme(url);
     }
 
+    /**
+     * Efficiently determines if the given |url| has the given |scheme|.
+     * The passed scheme must be non-null, and not include the trailing colon.
+     * @return true if the url starts with the supplied scheme (regardless of whether the remainer
+     *              of the URL is validly formed for that scheme type).
+     */
+    public static boolean schemeIs(String url, String scheme) {
+        // Avoid using a native method or parsing the full URL as this maybe a very large
+        // data:... URL.
+        if (url == null || scheme.isEmpty()) return false;
+        assert scheme.charAt(scheme.length() - 1) != ':';
+        int start = 0;
+        while (start < url.length() && Character.isWhitespace(url.codePointAt(start))) ++start;
+        final int colonPos = start + scheme.length();
+        return url.length() > colonPos &&
+            url.charAt(colonPos) == ':' &&
+            url.regionMatches(true, start, scheme, 0, scheme.length());
+    }
+
     private static native String nativeGetOrigin(String url);
     private static native String nativeGetScheme(String url);
 }