Add a flag in WebAPK's proto when the Web App Manifest is no longer available.

chrome/browser/android/webapk/webapk_installer.h

Index: chrome/browser/android/webapk/webapk_installer.h
diff --git a/chrome/browser/android/webapk/webapk_installer.h b/chrome/browser/android/webapk/webapk_installer.h
index c24a66886f1d919d5d86d9a41f6c0baaeb25b304..6c45a043335b247b24ef1c21d8227ca56ddf7141 100644
--- a/chrome/browser/android/webapk/webapk_installer.h
+++ b/chrome/browser/android/webapk/webapk_installer.h
@@ -6,6 +6,7 @@
 #define CHROME_BROWSER_ANDROID_WEBAPK_WEBAPK_INSTALLER_H_
 
 #include <jni.h>
+#include <map>
 #include <memory>
 
 #include "base/android/scoped_java_ref.h"
@@ -65,17 +66,19 @@ class WebApkInstaller : public net::URLFetcherDelegate {
   // after the request to install the WebAPK is sent to the Google Play server.
   void UpdateAsync(content::BrowserContext* browser_context,
                    const FinishCallback& callback,
-                   const std::string& icon_murmur2_hash,
                    const std::string& webapk_package,
-                   int webapk_version);
+                   int webapk_version,
+                   bool stale_manifest,
+                   const std::map<std::string, std::string>& icon_url_hash_map);

[pkotwicz, 2016/12/07 20:41:30]

Nit: Name this |icon_url_to_murmur2_hash_map| to match WebApkInfo.java

[Xi Han, 2016/12/09 18:40:11]

Done.

 
   // Same as UpdateAsync() but uses the passed in |request_context_getter|.
   void UpdateAsyncWithURLRequestContextGetter(
       net::URLRequestContextGetter* request_context_getter,
       const FinishCallback& callback,
-      const std::string& icon_murmur2_hash,
       const std::string& webapk_package,
-      int webapk_version);
+      int webapk_version,
+      bool stale_manifest,
+      const std::map<std::string, std::string>& icon_url_hash_map);
 
   // Sets the timeout for the server requests.
   void SetTimeoutMs(int timeout_ms);
@@ -210,10 +213,6 @@ class WebApkInstaller : public net::URLFetcherDelegate {
   // WebAPK app icon.
   const SkBitmap shortcut_icon_;
 
-  // Murmur2 hash of the bitmap at the app icon URL prior to any transformations
-  // being applied to the bitmap (such as encoding/decoding the icon bitmap).
-  std::string shortcut_icon_murmur2_hash_;
-
   // WebAPK server URL.
   GURL server_url_;