[ios] Removed UIWebView JS evaluation code.

ios/web/web_state/ui/web_view_js_utils.mm

Index: ios/web/web_state/ui/web_view_js_utils.mm
diff --git a/ios/web/web_state/ui/web_view_js_utils.mm b/ios/web/web_state/ui/web_view_js_utils.mm
index a97f04f04ce085fcb60f83e6b3785f5bb7513286..4d08d733102f607eeecd5eae90c36eb699d8fe94 100644
--- a/ios/web/web_state/ui/web_view_js_utils.mm
+++ b/ios/web/web_state/ui/web_view_js_utils.mm
@@ -4,17 +4,16 @@
 
 #import "ios/web/web_state/ui/web_view_js_utils.h"
 
-#import <UIKit/UIKit.h>
+#include <CoreFoundation/CoreFoundation.h>
 #import <WebKit/WebKit.h>
 
-#include "base/ios/weak_nsobject.h"
 #include "base/logging.h"
 #include "base/mac/scoped_nsobject.h"
 
 namespace {
 
-// Converts result of WKWebView script evaluation to UIWebView format.
-NSString* UIResultFromWKResult(id result) {
+// Converts result of WKWebView script evaluation to a string.
+NSString* StringResultFromWKResult(id result) {

[Jackie Quinn, 2016/03/17 17:06:43]

Are we planning on making it so that we don't convert to string? If so, maybe
file a bug and add a TODO.

[Eugene But (OOO till 7-30), 2016/03/17 17:19:14]

Web Controller will not be used as public API. WebState currently does not have
API to evaluate JS with callback, so if we add it, then maybe we'll make it
return |id| or even |base::Value|. I added TODO in JSInjectionEvaluator.

   if (!result)
     return @"";
 
@@ -42,18 +41,6 @@ namespace web {
 
 NSString* const kJSEvaluationErrorDomain = @"JSEvaluationError";
 
-void EvaluateJavaScript(UIWebView* web_view,
-                        NSString* script,
-                        JavaScriptCompletion completion_handler) {
-  base::WeakNSObject<UIWebView> weak_web_view(web_view);
-  dispatch_async(dispatch_get_main_queue(), ^{
-    NSString* result =
-        [weak_web_view stringByEvaluatingJavaScriptFromString:script];
-    if (completion_handler)
-      completion_handler(result, nil);
-  });
-}
-
 void EvaluateJavaScript(WKWebView* web_view,
                         NSString* script,
                         JavaScriptCompletion completion_handler) {
@@ -79,7 +66,7 @@ void EvaluateJavaScript(WKWebView* web_view,
   // need to call those completion handlers.
   if (completion_handler) {
     web_view_completion_handler = ^(id result, NSError* error) {
-      completion_handler(UIResultFromWKResult(result), error);
+      completion_handler(StringResultFromWKResult(result), error);
     };
   }
   [web_view evaluateJavaScript:script