Media Remoting: Add interstitial elements to media element shadow dom.

third_party/WebKit/Source/core/css/mediaControls.css

Index: third_party/WebKit/Source/core/css/mediaControls.css
diff --git a/third_party/WebKit/Source/core/css/mediaControls.css b/third_party/WebKit/Source/core/css/mediaControls.css
index f13cb3dfcc2d344d7de2377fca0536f78c38af38..4b89cc09cccb0966356b950ba19e259326991ddf 100644
--- a/third_party/WebKit/Source/core/css/mediaControls.css
+++ b/third_party/WebKit/Source/core/css/mediaControls.css
@@ -145,6 +145,117 @@ video::-webkit-media-controls-overlay-play-button {
     padding: 0;
 }
 
+/* TODO(xjz): Move media remoting elements to a separate css file. */
+video::-internal-media-remoting-interstitial {
+    width: inherit;
+    height: inherit;
+    position: relative;
+    direction: ltr;
+    display: flex;
+    flex-direction: column;
+    font-family: Segoe, "Helvetica Neue", Roboto, Arial, Helvetica, sans-serif;
+    justify-content: flex-end;
+    align-items: center;
+    font-size: 28px;
+    background-color: black;
+    -webkit-transition: opacity .2s cubic-bezier (0.4, 0.0, 0.2, 1);
+    -moz-transition: opacity .2s cubic-bezier (0.4, 0.0, 0.2, 1);
+    -o-transition: opacity .2s cubic-bezier (0.4, 0.0, 0.2, 1);
+    transition: opacity .2s cubic-bezier (0.4, 0.0, 0.2, 1);
+}
+
+video::-internal-media-remoting-background-image {
+    -webkit-appearance: media-remoting-background-image;

[liberato (no reviews please), 2017/04/12 21:57:44]

do these need to be in CSSValueKeywords.json5?

might not be needed if they don't need to be handled separately by the themed
painter... i don't remember.

[xjz, 2017/04/13 00:08:48]

Seems not necessary. Only the cast icon needs to be handled by the themed
painter. Now removed the -webkit-appearance. 

+    display: flex;
+    position: absolute;
+    margin: 0;
+    top: 0px;
+    left: 0px;
+    width: 100%;
+    height: 100%;
+    border: none;
+    border-width: 0px;
+    background-color: transparent;
+    padding: 0;
+    filter: grayscale(100%) blur(5px);
+}
+
+video::-internal-media-remoting-interstitial-elements {
+    -webkit-appearance: media-remoting-interstitial-elements;
+    display: flex;
+    position: absolute;
+    margin: 0;
+    top: 0px;
+    left: 0px;
+    border: none;
+    border-width: 0px;
+    background-color: transparent;
+    width: 100%;
+    height: 100%;
+    padding: 0;
+}
+
+video::-internal-media-remoting-cast-icon {
+    -webkit-appearance: media-remoting-cast-icon;
+    display: flex;
+    position: absolute;
+    margin: 0px;
+    border-width: 0px;
+    background-color: transparent;
+    height: 36px;
+    width: 44px;
+    padding: 0px;
+    left: calc(50% - 22px);
+    top: calc(50% - 60px);
+}
+
+video::-internal-media-remoting-cast-text-message {
+    -webkit-appearance: media-remoting-cast-text-message;
+    display: flex;
+    position: absolute;
+    border: none;
+    color: #FFFFFF;
+    opacity: 54%
+    text-wrap: none;
+    text-align: center;
+    background-color: transparent;
+    font-size: 13pt;
+    font-face: Roboto-Regular, Sans-serif, Segoe, Serif, Helvetica;
+    padding: 0px;
+    margin: 0px;
+    top: calc(50% - 10px);
+    width: 100%;
+}
+
+video::-internal-media-remoting-disable-button {
+    -webkit-appearance: media-remoting-disable-button;
+    display: flex;
+    position: absolute;
+    top: calc(50% + 55pt);
+    left: calc(50% - 100px);
+    border: 2pt solid rgba(255,255,255,.54);
+    border-radius: 2pt;
+    margin: 0px;
+    height: 28pt;
+    background-color: transparent;
+    color: #FFFFFF;
+    text-wrap: none;
+    text-align: center;
+    vertical-align: middle;
+    font-size: 13pt;
+    font-face: Roboto-Medium, Sans-serif, Segoe, Serif, Helvetica;
+    opacity: 54%
+    padding: 0px;
+    -webkit-transition: border .5s ease-out;
+    -moz-transition: border .5s ease-out;
+    -o-transition: border .5s ease-out;
+    transition: border .5s ease-out;
+}
+
+video::-internal-media-remoting-disable-button:hover, video::-internal-media-remoting-cast-icon:hover {
+    opacity: 70%;
+}
+
 video::-internal-media-controls-overlay-cast-button {
     -webkit-appearance: -internal-media-overlay-cast-off-button;
     display: flex;