Register WideVine keysystem for WebView.

android_webview/android_webview.gyp

Index: android_webview/android_webview.gyp
diff --git a/android_webview/android_webview.gyp b/android_webview/android_webview.gyp
index acc2e2c4f5c33c1b6358ace2b8f8a509900bd094..3ec4b3d9373b7dfac763315d9c124d0bbe85864e 100644
--- a/android_webview/android_webview.gyp
+++ b/android_webview/android_webview.gyp
@@ -100,6 +100,7 @@
         '../gpu/gpu.gyp:command_buffer_service',
         '../gpu/gpu.gyp:gles2_implementation',
         '../skia/skia.gyp:skia',
+        '../third_party/widevine/cdm/widevine_cdm.gyp:widevine_cdm_version_h',
         '../ui/gl/gl.gyp:gl',
         '../ui/shell_dialogs/shell_dialogs.gyp:shell_dialogs',
         '../webkit/common/gpu/webkit_gpu.gyp:webkit_gpu',
@@ -108,6 +109,7 @@
       'include_dirs': [
         '..',
         '../skia/config',
+        '<(SHARED_INTERMEDIATE_DIR)',
         '<(SHARED_INTERMEDIATE_DIR)/ui/ui_resources/',
       ],
       'sources': [
@@ -200,6 +202,8 @@
         'public/browser/draw_gl.h',
         'renderer/aw_content_renderer_client.cc',
         'renderer/aw_content_renderer_client.h',
+        'renderer/aw_key_systems.cc',
+        'renderer/aw_key_systems.h',
         'renderer/aw_render_process_observer.cc',
         'renderer/aw_render_process_observer.h',
         'renderer/aw_render_view_ext.cc',