Script streaming: remove config.

Script streaming is now on by default since M41 (because of this config turned
it always on). Blink side ignores the config since r189473.

R=jochen@chromium.org
BUG=

Review URL: https://codereview.chromium.org/905683002

Cr-Commit-Position: refs/heads/master@{#315011}

chrome/browser/chrome_browser_field_trials.cc

@@ -53,7 +53,6 @@ void ChromeBrowserFieldTrials::InstantiateDynamicTrials() {
   base::FieldTrialList::FindValue("CLD1VsCLD2");
   base::FieldTrialList::FindValue("MouseEventPreconnect");
   base::FieldTrialList::FindValue("DisplayList2dCanvas");
-  base::FieldTrialList::FindValue("V8ScriptStreaming");
   // Activate the autocomplete dynamic field trials.
   OmniboxFieldTrial::ActivateDynamicTrials();
 }

content/browser/renderer_host/render_view_host_impl.cc

@@ -524,12 +524,6 @@ WebPreferences RenderViewHostImpl::ComputeWebkitPrefs(const GURL& url) {
     prefs.v8_cache_options = V8_CACHE_OPTIONS_DEFAULT;
   }
 
-  // TODO(marja): Clean up preferences + command line flag after streaming has
-  // launched in stable.
-  prefs.v8_script_streaming_enabled = true;
-  prefs.v8_script_streaming_mode =
-      V8_SCRIPT_STREAMING_MODE_ONLY_ASYNC_AND_DEFER;
-
   GetContentClient()->browser()->OverrideWebkitPrefs(this, url, &prefs);
   return prefs;
 }

content/public/common/common_param_traits_macros.h

@@ -44,8 +44,6 @@ IPC_ENUM_TRAITS_MAX_VALUE(WindowOpenDisposition,
 IPC_ENUM_TRAITS_MAX_VALUE(net::RequestPriority, net::MAXIMUM_PRIORITY)
 IPC_ENUM_TRAITS_MAX_VALUE(content::V8CacheOptions,
                           content::V8_CACHE_OPTIONS_LAST)
-IPC_ENUM_TRAITS_MAX_VALUE(content::V8ScriptStreamingMode,
-                          content::V8_SCRIPT_STREAMING_MODE_LAST)
 IPC_ENUM_TRAITS_MIN_MAX_VALUE(ui::PointerType,
                               ui::POINTER_TYPE_FIRST,
                               ui::POINTER_TYPE_LAST)
@@ -194,8 +192,6 @@ IPC_STRUCT_TRAITS_BEGIN(content::WebPreferences)
   IPC_STRUCT_TRAITS_MEMBER(navigate_on_drag_drop)
   IPC_STRUCT_TRAITS_MEMBER(spatial_navigation_enabled)
   IPC_STRUCT_TRAITS_MEMBER(v8_cache_options)
-  IPC_STRUCT_TRAITS_MEMBER(v8_script_streaming_enabled)
-  IPC_STRUCT_TRAITS_MEMBER(v8_script_streaming_mode)
   IPC_STRUCT_TRAITS_MEMBER(slimming_paint_enabled)
   IPC_STRUCT_TRAITS_MEMBER(pepper_accelerated_video_decode_enabled)
 #if defined(OS_ANDROID)

content/public/common/content_switches.cc

@@ -451,9 +451,6 @@ const char kEnableTracingOutput[]           = "enable-tracing-output";
 const char kEnableUserMediaScreenCapturing[] =
     "enable-usermedia-screen-capturing";
 
-// Enables streaming scripts to V8 while loading.
-const char kEnableV8ScriptStreaming[] = "enable-v8-script-streaming";
-
 // Enables the use of the @viewport CSS rule, which allows
 // pages to control aspects of their own layout. This also turns on touch-screen
 // pinch gestures.

content/public/common/content_switches.h

@@ -133,7 +133,6 @@ CONTENT_EXPORT extern const char kEnableThreadedCompositing[];
 CONTENT_EXPORT extern const char kEnableTracing[];
 CONTENT_EXPORT extern const char kEnableTracingOutput[];
 CONTENT_EXPORT extern const char kEnableUserMediaScreenCapturing[];
-extern const char kEnableV8ScriptStreaming[];
 CONTENT_EXPORT extern const char kEnableViewport[];
 CONTENT_EXPORT extern const char kEnableViewportMeta[];
 CONTENT_EXPORT extern const char kMainFrameResizesAreOrientationChanges[];

content/public/common/web_preferences.cc

@@ -59,18 +59,6 @@ STATIC_ASSERT_MATCHING_ENUMS(V8_CACHE_OPTIONS_RECENT_SMALL,
 STATIC_ASSERT_MATCHING_ENUMS(V8_CACHE_OPTIONS_LAST,
                              WebSettings::V8CacheOptionsRecentSmall);
 
-STATIC_ASSERT_MATCHING_ENUMS(V8_SCRIPT_STREAMING_MODE_ALL,
-                             WebSettings::V8ScriptStreamingModeAll);
-STATIC_ASSERT_MATCHING_ENUMS(
-    V8_SCRIPT_STREAMING_MODE_ONLY_ASYNC_AND_DEFER,
-    WebSettings::V8ScriptStreamingModeOnlyAsyncAndDefer);
-STATIC_ASSERT_MATCHING_ENUMS(
-    V8_SCRIPT_STREAMING_MODE_ALL_PLUS_BLOCK_PARSER_BLOCKING,
-    WebSettings::V8ScriptStreamingModeAllPlusBlockParsingBlocking);
-STATIC_ASSERT_MATCHING_ENUMS(
-    V8_SCRIPT_STREAMING_MODE_LAST,
-    WebSettings::V8ScriptStreamingModeAllPlusBlockParsingBlocking);
-
 STATIC_ASSERT_MATCHING_ENUMS(ui::POINTER_TYPE_NONE,
                              WebSettings::PointerTypeNone);
 STATIC_ASSERT_MATCHING_ENUMS(ui::POINTER_TYPE_COARSE,
@@ -191,8 +179,6 @@ WebPreferences::WebPreferences()
       use_solid_color_scrollbars(false),
       navigate_on_drag_drop(true),
       v8_cache_options(V8_CACHE_OPTIONS_DEFAULT),
-      v8_script_streaming_enabled(false),
-      v8_script_streaming_mode(V8_SCRIPT_STREAMING_MODE_ALL),
       slimming_paint_enabled(false),
       cookie_enabled(true),
       pepper_accelerated_video_decode_enabled(false),

content/public/common/web_preferences.h

@@ -50,14 +50,6 @@ enum V8CacheOptions {
   V8_CACHE_OPTIONS_LAST = V8_CACHE_OPTIONS_RECENT_SMALL
 };
 
-enum V8ScriptStreamingMode {
-  V8_SCRIPT_STREAMING_MODE_ALL,
-  V8_SCRIPT_STREAMING_MODE_ONLY_ASYNC_AND_DEFER,
-  V8_SCRIPT_STREAMING_MODE_ALL_PLUS_BLOCK_PARSER_BLOCKING,
-  V8_SCRIPT_STREAMING_MODE_LAST =
-      V8_SCRIPT_STREAMING_MODE_ALL_PLUS_BLOCK_PARSER_BLOCKING
-};
-
 // The ISO 15924 script code for undetermined script aka Common. It's the
 // default used on WebKit's side to get/set a font setting when no script is
 // specified.
@@ -180,8 +172,6 @@ struct CONTENT_EXPORT WebPreferences {
   bool use_solid_color_scrollbars;
   bool navigate_on_drag_drop;
   V8CacheOptions v8_cache_options;
-  bool v8_script_streaming_enabled;
-  V8ScriptStreamingMode v8_script_streaming_mode;
   bool slimming_paint_enabled;
 
   // This flags corresponds to a Page's Settings' setCookieEnabled state. It

content/renderer/render_view_impl.cc

@@ -1065,11 +1065,6 @@ void RenderView::ApplyWebPreferences(const WebPreferences& prefs,
   settings->setV8CacheOptions(
       static_cast<WebSettings::V8CacheOptions>(prefs.v8_cache_options));
 
-  settings->setV8ScriptStreamingEnabled(prefs.v8_script_streaming_enabled);
-  settings->setV8ScriptStreamingMode(
-      static_cast<WebSettings::V8ScriptStreamingMode>(
-          prefs.v8_script_streaming_mode));
-
   // Needs to happen before setIgnoreVIewportTagScaleLimits below.
   web_view->setDefaultPageScaleLimits(
       prefs.default_minimum_page_scale_factor,