Enable HTMLMediaElement@autoplay on Android

content/public/common/web_preferences.cc

 // Copyright 2014 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "content/public/common/web_preferences.h"
 
 #include "base/basictypes.h"
 #include "base/strings/string_util.h"
 #include "base/strings/utf_string_conversions.h"
 #include "third_party/WebKit/public/web/WebSettings.h"
@@ skipping 120 matching lines @@
       cookie_enabled(true),
       pepper_accelerated_video_decode_enabled(false)
 #if defined(OS_ANDROID)
       ,
       text_autosizing_enabled(true),
       font_scale_factor(1.0f),
       device_scale_adjustment(1.0f),
       force_enable_zoom(false),
       disallow_fullscreen_for_non_media_elements(false),
       double_tap_to_zoom_enabled(true),
-      user_gesture_required_for_media_playback(true),
+      user_gesture_required_for_media_playback(false),
       support_deprecated_target_density_dpi(false),
       use_legacy_background_size_shorthand_behavior(false),
       wide_viewport_quirk(false),
       use_wide_viewport(true),
       viewport_meta_layout_size_quirk(false),
       viewport_meta_merge_content_quirk(false),
       viewport_meta_non_user_scalable_quirk(false),
       viewport_meta_zero_values_quirk(false),
       clobber_user_agent_initial_scale_quirk(false),
       ignore_main_frame_overflow_hidden_quirk(false),
       report_screen_size_in_physical_pixels_quirk(false)
 #endif
 {
   standard_font_family_map[kCommonScript] =
       base::ASCIIToUTF16("Times New Roman");
   fixed_font_family_map[kCommonScript] = base::ASCIIToUTF16("Courier New");
   serif_font_family_map[kCommonScript] = base::ASCIIToUTF16("Times New Roman");
   sans_serif_font_family_map[kCommonScript] = base::ASCIIToUTF16("Arial");
   cursive_font_family_map[kCommonScript] = base::ASCIIToUTF16("Script");
   fantasy_font_family_map[kCommonScript] = base::ASCIIToUTF16("Impact");
   pictograph_font_family_map[kCommonScript] =
       base::ASCIIToUTF16("Times New Roman");
 }
 
 WebPreferences::~WebPreferences() {
 }
 
 }  // namespace content