Add WebRuntimeFeatures::enableCSSViewport() feature

Add WebRuntimeFeatures::enableCSSViewport() method that should substitute the unfortunately named 'WebRuntimeFeatures::setCSSViewportEnabled()'.

BUG=424459

Review URL: https://codereview.chromium.org/662003002

git-svn-id: svn://svn.chromium.org/blink/trunk@183899 bbb929c8-8fbe-4397-9dbb-9b2b20218538

third_party/WebKit/Source/web/WebRuntimeFeatures.cpp

@@ -299,6 +299,11 @@ void WebRuntimeFeatures::setCSSViewportEnabled(bool enable)
     RuntimeEnabledFeatures::setCSSViewportEnabled(enable);
 }
 
+void WebRuntimeFeatures::enableCSSViewport(bool enable)
+{
+    RuntimeEnabledFeatures::setCSSViewportEnabled(enable);
+}
+
 void WebRuntimeFeatures::enableV8IdleTasks(bool enable)
 {
     RuntimeEnabledFeatures::setV8IdleTasksEnabled(enable);

third_party/WebKit/public/web/WebRuntimeFeatures.h

@@ -137,8 +137,11 @@ public:
 
     BLINK_EXPORT static void enableTextBlobs(bool);
 
+    // Note : Will be removed. Use enableCSSViewport() instead.
     BLINK_EXPORT static void setCSSViewportEnabled(bool);
 
+    BLINK_EXPORT static void enableCSSViewport(bool);
+
     BLINK_EXPORT static void enableV8IdleTasks(bool);
 
     BLINK_EXPORT static void enableSVG1DOM(bool);