Remove commandline flag "--enable-web-animations-svg"

We are removing the corresponding runtime flag in Blink, as it currently
has no effect. This patch removes its usage in Chromium side.

Blink side: https://codereview.chromium.org/535463002/

BUG=None

Review URL: https://codereview.chromium.org/530353002

Cr-Commit-Position: refs/heads/master@{#293195}

content/browser/renderer_host/render_process_host_impl.cc

@@ -1165,7 +1165,6 @@ void RenderProcessHostImpl::PropagateBrowserCommandLineToRenderer(
     switches::kEnableViewport,
     switches::kEnableViewportMeta,
     switches::kEnableVtune,
-    switches::kEnableWebAnimationsSVG,
     switches::kEnableWebGLDraftExtensions,
     switches::kEnableWebGLImageChromium,
     switches::kEnableWebMIDI,

content/child/runtime_features.cc

@@ -134,9 +134,6 @@ void SetRuntimeFeaturesDefaultsAndUpdateFromArgs(
   if (command_line.HasSwitch(switches::kDisablePrefixedEncryptedMedia))
     WebRuntimeFeatures::enablePrefixedEncryptedMedia(false);
 
-  if (command_line.HasSwitch(switches::kEnableWebAnimationsSVG))
-    WebRuntimeFeatures::enableWebAnimationsSVG(true);
-
   if (command_line.HasSwitch(switches::kEnableWebMIDI))
     WebRuntimeFeatures::enableWebMIDI(true);
 

content/public/common/content_switches.cc

@@ -473,9 +473,6 @@ const char kMainFrameResizesAreOrientationChanges[] =
 // Enable the Vtune profiler support.
 const char kEnableVtune[]                   = "enable-vtune-support";
 
-// Enable SVG Animations on the Web Animations model.
-const char kEnableWebAnimationsSVG[]        = "enable-web-animations-svg";
-
 // Enables WebGL extensions not yet approved by the community.
 const char kEnableWebGLDraftExtensions[] = "enable-webgl-draft-extensions";
 

content/public/common/content_switches.h

@@ -138,7 +138,6 @@ CONTENT_EXPORT extern const char kEnableViewport[];
 CONTENT_EXPORT extern const char kEnableViewportMeta[];
 CONTENT_EXPORT extern const char kMainFrameResizesAreOrientationChanges[];
 CONTENT_EXPORT extern const char kEnableVtune[];
-extern const char kEnableWebAnimationsSVG[];
 CONTENT_EXPORT extern const char kEnableWebGLDraftExtensions[];
 CONTENT_EXPORT extern const char kEnableWebGLImageChromium[];
 CONTENT_EXPORT extern const char kEnableWebMIDI[];