Allow autoplay unmuted for WebAPK in the manifest scope

content/public/android/java/src/org/chromium/content/app/ChildProcessServiceImpl.java

Index: content/public/android/java/src/org/chromium/content/app/ChildProcessServiceImpl.java
diff --git a/content/public/android/java/src/org/chromium/content/app/ChildProcessServiceImpl.java b/content/public/android/java/src/org/chromium/content/app/ChildProcessServiceImpl.java
index 7df71bb4b475e0d954316fe28455ab670b5a0893..2aa519d0feb9b4b85ed0449fb4c03dbf9f92941b 100644
--- a/content/public/android/java/src/org/chromium/content/app/ChildProcessServiceImpl.java
+++ b/content/public/android/java/src/org/chromium/content/app/ChildProcessServiceImpl.java
@@ -38,6 +38,7 @@ import org.chromium.content.common.IChildProcessCallback;
 import org.chromium.content.common.IChildProcessService;
 import org.chromium.content.common.SurfaceWrapper;
 
+import java.util.ArrayList;
 import java.util.concurrent.Semaphore;
 import java.util.concurrent.atomic.AtomicReference;
 
@@ -74,6 +75,7 @@ public class ChildProcessServiceImpl {
     private ChromiumLinkerParams mLinkerParams;
     // Child library process type.
     private int mLibraryProcessType;
+    private String[] mAdditionalCommandLine;
 
     private static AtomicReference<Context> sContext = new AtomicReference<>(null);
     private boolean mLibraryInitialized;
@@ -196,7 +198,19 @@ public class ChildProcessServiceImpl {
                             mMainThread.wait();
                         }
                     }
-                    CommandLine.init(mCommandLineParams);
+
+                    ArrayList<String> fullCommandLine = new ArrayList<String>();
+                    for (String param : mCommandLineParams) fullCommandLine.add(param);
+                    if (mAdditionalCommandLine != null) {
+                        for (String param : mAdditionalCommandLine) {
+                            fullCommandLine.add(param);
+                        }
+                    }
+                    String[] fullCommandLineArray = new String[fullCommandLine.size()];
+                    for (int i = 0; i < fullCommandLine.size(); ++i) {
+                        fullCommandLineArray[i] = fullCommandLine.get(i);
+                    }
+                    CommandLine.init(fullCommandLineArray);
 
                     if (ContentSwitches.SWITCH_RENDERER_PROCESS.equals(
                             CommandLine.getInstance().getSwitchValue(
@@ -327,6 +341,7 @@ public class ChildProcessServiceImpl {
             // See onCreate().
             mLinkerParams = new ChromiumLinkerParams(intent);
             mLibraryProcessType = ChildProcessCreationParams.getLibraryProcessType(intent);
+            mAdditionalCommandLine = ChildProcessCreationParams.getAdditionalCommandLine(intent);
             mMainThread.notifyAll();
         }
     }