Make WebAPK server use Murmur2 Hash version compatible with WebAPK server

BUG=662495

Review-Url: https://codereview.chromium.org/2477173002
Cr-Commit-Position: refs/heads/master@{#430195}

chrome/android/javatests/src/org/chromium/chrome/browser/webapps/ManifestUpgradeDetectorFetcherTest.java

@@ -35,7 +35,7 @@ public class ManifestUpgradeDetectorFetcherTest extends ChromeTabbedActivityTest
     private static final String WEB_MANIFEST_WITH_LONG_ICON_MURMUR2_HASH =
             "/chrome/test/data/banners/manifest_long_icon_murmur2_hash.json";
     // Murmur2 hash of icon at {@link WEB_MANIFEST_WITH_LONG_ICON_MURMUR2_HASH}.
-    private static final String LONG_ICON_MURMUR2_HASH = "17165487231247065090";
+    private static final String LONG_ICON_MURMUR2_HASH = "13495109619211221667";
 
     // Scope for {@link WEB_MANIFEST_URL1}, {@link WEB_MANIFEST_URL2} and
     // {@link WEB_MANIFEST_WITH_LONG_ICON_MURMUR2_HASH}.

chrome/android/javatests/src/org/chromium/chrome/browser/webapps/ManifestUpgradeDetectorTest.java

@@ -32,7 +32,7 @@ public class ManifestUpgradeDetectorTest extends ChromeTabbedActivityTestBase {
     private static final String WEBAPK_NAME = "Manifest test app";
     private static final String WEBAPK_SHORT_NAME = "Manifest test app";
     private static final String WEBAPK_ICON_URL = "/chrome/test/data/banners/image-512px.png";
-    private static final String WEBAPK_ICON_MURMUR2_HASH = "6537363487080720023";
+    private static final String WEBAPK_ICON_MURMUR2_HASH = "7742433188808797392";
     private static final int WEBAPK_DISPLAY_MODE = WebDisplayMode.Standalone;
     private static final int WEBAPK_ORIENTATION = ScreenOrientationValues.LANDSCAPE;
     private static final long WEBAPK_THEME_COLOR = 2147483648L;

chrome/browser/android/webapk/webapk_icon_hasher.cc

@@ -47,7 +47,7 @@ void WebApkIconHasher::OnURLFetchComplete(const net::URLFetcher* source) {
   // browser process is a security bug.
   std::string raw_image_data;
   source->GetResponseAsString(&raw_image_data);
-  uint64_t hash = MurmurHash64B(&raw_image_data.front(), raw_image_data.size(),
+  uint64_t hash = MurmurHash64A(&raw_image_data.front(), raw_image_data.size(),
                                 kMurmur2HashSeed);
   callback_.Run(base::Uint64ToString(hash));
 }

chrome/browser/android/webapk/webapk_icon_hasher_unittest.cc

@@ -26,7 +26,7 @@ const base::FilePath::CharType kTestDataDir[] =
 const char kIconUrl[] = "/android/google.png";
 
 // Murmur2 hash for |kIconUrl|.
-const char kIconMurmur2Hash[] = "13321047016824288610";
+const char kIconMurmur2Hash[] = "2081059568551351877";
 
 // Runs WebApkIconHasher and blocks till the murmur2 hash is computed.
 class WebApkIconHasherRunner {