Re-implement PageState serialization without a Blink API dependency.

content/content_common.gypi

 # Copyright (c) 2012 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.
 
 {
   'dependencies': [
     '../base/base.gyp:base',
     '../components/tracing.gyp:tracing',
     '../media/media.gyp:media',
     '../net/net.gyp:net',
@@ skipping 37 matching lines @@
     'public/common/geoposition.h',
     'public/common/gpu_memory_stats.cc',
     'public/common/gpu_memory_stats.h',
     'public/common/injection_test_mac.h',
     'public/common/injection_test_win.h',
     'public/common/javascript_message_type.h',
     'public/common/main_function_params.h',
     'public/common/media_stream_request.cc',
     'public/common/media_stream_request.h',
     'public/common/page_state.cc',
-    'public/common/page_state_ios.cc',
-    'public/common/page_state_webkit.cc',
     'public/common/page_state.h',
     'public/common/page_transition_types.cc',
     'public/common/page_transition_types.h',
     'public/common/page_transition_types_list.h',
     'public/common/page_type.h',
     'public/common/page_zoom.h',
     'public/common/password_form.cc',
     'public/common/password_form.h',
     'public/common/pepper_plugin_info.cc',
     'public/common/pepper_plugin_info.h',
@@ skipping 201 matching lines @@
     'common/memory_benchmark_messages.h',
     'common/message_router.cc',
     'common/message_router.h',
     'common/mime_registry_messages.h',
     'common/navigation_gesture.h',
     'common/net/url_fetcher.cc',
     'common/net/url_request_user_data.cc',
     'common/net/url_request_user_data.h',
     'common/p2p_messages.h',
     'common/p2p_sockets.h',
+    'common/page_state_serialization.cc',
+    'common/page_state_serialization.h',
     'common/page_zoom.cc',
     'common/pepper_messages.h',
     'common/pepper_plugin_registry.cc',
     'common/pepper_plugin_registry.h',
     'common/pepper_renderer_instance_data.cc',
     'common/pepper_renderer_instance_data.h',
     'common/plugin_carbon_interpose_constants_mac.cc',
     'common/plugin_carbon_interpose_constants_mac.h',
     'common/plugin_process_messages.h',
     'common/process_type.cc',
@@ skipping 63 matching lines @@
         ['include', '^public/common/page_state\\.cc$'],
         ['include', '^public/common/page_transition_types\\.cc$'],
         ['include', '^public/common/password_form\\.cc$'],
         ['include', '^public/common/speech_recognition_result\\.cc$'],
         ['include', '^public/common/ssl_status\\.cc$'],
         ['include', '^public/common/url_constants\\.cc$'],
         ['include', '^common/content_paths\\.cc$'],
         ['include', '^common/media/media_stream_options\\.cc$'],
         ['include', '^common/net/url_fetcher\\.cc$'],
         ['include', '^common/net/url_request_user_data\\.cc$'],
+        ['include', '^common/page_state_serialization\\.cc$'],
         ['include', '^common/savable_url_schemes\\.cc$'],
         ['include', '^common/url_schemes\\.cc$'],
       ],
     }, {  # OS!="ios"
       'dependencies': [
         '../cc/cc.gyp:cc',
         '../gpu/gpu.gyp:gles2_c_lib',
         '../gpu/gpu.gyp:gles2_implementation',
         '../gpu/gpu.gyp:gpu_ipc',
         '../ipc/ipc.gyp:ipc',
@@ skipping 163 matching lines @@
         '..\\third_party\\directxsdk\\files\\Redist\\<(input)',
         '<(output)',
         '<(PRODUCT_DIR)',
         ],
         'msvs_cygwin_shell': 1,
       },
      ]
     }],
   ],
 }