Adds MediaClientAndroid to support embedder/MediaDrmBridge interaction.

android_webview/java/src/org/chromium/android_webview/AwBrowserProcess.java

Index: android_webview/java/src/org/chromium/android_webview/AwBrowserProcess.java
diff --git a/android_webview/java/src/org/chromium/android_webview/AwBrowserProcess.java b/android_webview/java/src/org/chromium/android_webview/AwBrowserProcess.java
index c1529e66148c3ce9438731474592ffd31fc4a06d..592e48f801bd76f88127335cfcd1b1ce663c5bbb 100644
--- a/android_webview/java/src/org/chromium/android_webview/AwBrowserProcess.java
+++ b/android_webview/java/src/org/chromium/android_webview/AwBrowserProcess.java
@@ -5,7 +5,6 @@
 package org.chromium.android_webview;
 
 import android.content.Context;
-import android.util.Log;
 
 import org.chromium.base.PathUtils;
 import org.chromium.base.ThreadUtils;
@@ -13,9 +12,6 @@ import org.chromium.base.library_loader.LibraryLoader;
 import org.chromium.base.library_loader.LibraryProcessType;
 import org.chromium.base.library_loader.ProcessInitException;
 import org.chromium.content.browser.BrowserStartupController;
-import org.chromium.media.MediaDrmBridge;
-
-import java.util.UUID;
 
 /**
  * Wrapper for the steps needed to initialize the java and native sides of webview chromium.
@@ -60,25 +56,10 @@ public abstract class AwBrowserProcess {
                 try {
                     BrowserStartupController.get(context, LibraryProcessType.PROCESS_WEBVIEW)
                             .startBrowserProcessesSync(true);
-                    initializePlatformKeySystem();
                 } catch (ProcessInitException e) {
                     throw new RuntimeException("Cannot initialize WebView", e);
                 }
             }
         });
     }
-
-    private static void initializePlatformKeySystem() {
-        String[] mappings = AwResource.getConfigKeySystemUuidMapping();
-        for (String mapping : mappings) {
-            try {
-                String fragments[] = mapping.split(",");
-                String keySystem = fragments[0].trim();
-                UUID uuid = UUID.fromString(fragments[1]);
-                MediaDrmBridge.addKeySystemUuidMapping(keySystem, uuid);
-            } catch (java.lang.RuntimeException e) {
-                Log.e(TAG, "Can't parse key-system mapping: " + mapping);
-            }
-        }
-    }
 }