media: Set MediaClientAndroid in the GPU process.

chrome/common/chrome_content_client.h

Index: chrome/common/chrome_content_client.h
diff --git a/chrome/common/chrome_content_client.h b/chrome/common/chrome_content_client.h
index bdc23a8d8b1aa8ad7573551f95b7a8bec2bec8e6..0a084469fb35616661552bb93cd9298a0883f375 100644
--- a/chrome/common/chrome_content_client.h
+++ b/chrome/common/chrome_content_client.h
@@ -95,6 +95,10 @@ class ChromeContentClient : public content::ContentClient {
     return &origin_trial_key_manager_;
   }
 
+#if defined(OS_ANDROID)
+  media::MediaClientAndroid* GetMediaClientAndroid() override;
+#endif  // OS_ANDROID
+
  private:
   OriginTrialKeyManager origin_trial_key_manager_;
 };