HTML Media Capture: update capture attribute to use string.

third_party/WebKit/Source/core/html/HTMLInputElement.cpp

Index: third_party/WebKit/Source/core/html/HTMLInputElement.cpp
diff --git a/third_party/WebKit/Source/core/html/HTMLInputElement.cpp b/third_party/WebKit/Source/core/html/HTMLInputElement.cpp
index 77db91671a0e37d0448b181acc33ffafcfd20927..bdffa0fb98c5b834ce84fd07c437d9f0f3f3e502 100644
--- a/third_party/WebKit/Source/core/html/HTMLInputElement.cpp
+++ b/third_party/WebKit/Source/core/html/HTMLInputElement.cpp
@@ -1681,6 +1681,19 @@ bool HTMLInputElement::ShouldAppearIndeterminate() const {
   return input_type_->ShouldAppearIndeterminate();
 }
 
+String HTMLInputElement::capture() const {
+  const String capture = FastGetAttribute(captureAttr).LowerASCII();
+  if (capture == "user")
+    return capture;
+
+  // |capture| is equivalent to 'environment' if unspecified.
+  return "environment";
+}
+
+void HTMLInputElement::setCapture(const AtomicString& value) {
+  setAttribute(captureAttr, value);
+}
+
 bool HTMLInputElement::IsInRequiredRadioButtonGroup() {
   // TODO(tkent): Remove type check.
   DCHECK_EQ(type(), InputTypeNames::radio);