Inject password_controller with WKWebView injection mechanism.

Now password_controller.js is injected by adding it to call of __gCrWeb.findPasswordForms().
It has performance drawbacks since __gCrWeb.findPasswordForms() could be called multiple times.
This CL makes injection of password_controller.js with WKWebView injection.

Also this CL updates the header comment in password_controller.js with up-to-date information.

Bug: 828824, 418827
Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I4036e3279e0c3a32301795b46630c49801679106
Reviewed-on: https://chromium-review.googlesource.com/995534
Commit-Queue: Vadym Doroshenko <dvadym@chromium.org>
Reviewed-by: Eugene But <eugenebut@chromium.org>
Cr-Commit-Position: refs/heads/master@{#548496}

ios/chrome/browser/passwords/js_password_manager.h

@@ -6,16 +6,14 @@
 #define IOS_CHROME_BROWSER_PASSWORDS_JS_PASSWORD_MANAGER_H_
 
 #include "base/ios/block_types.h"
-#import "ios/web/public/web_state/js/crw_js_injection_manager.h"
-
-@class CRWJSInjectionReceiver;
+#import "ios/web/public/web_state/js/crw_js_injection_receiver.h"
 
 // Loads the JavaScript file, password_controller.js, which contains password
 // form parsing and autofill functions. It will be evaluated on a page that
 // is known to have at least one password form (see hasPasswordField_ in
 // password_controller.js) It returns contents of those password forms and also
 // registers functions that are later used to autofill them.
-@interface JsPasswordManager : CRWJSInjectionManager
+@interface JsPasswordManager : NSObject
 
 // Finds any password forms on the web page.
 // |completionHandler| is then called with the JSON string result (which can
@@ -48,6 +46,12 @@
                 password:(NSString*)password
        completionHandler:(void (^)(BOOL))completionHandler;
 
+// Designated initializer. |receiver| should not be nil.
+- (instancetype)initWithReceiver:(CRWJSInjectionReceiver*)receiver
+    NS_DESIGNATED_INITIALIZER;
+
+- (instancetype)init NS_UNAVAILABLE;
+
 @end
 
 #endif  // IOS_CHROME_BROWSER_PASSWORDS_JS_PASSWORD_MANAGER_H_

ios/chrome/browser/passwords/js_password_manager.mm

@@ -22,32 +22,39 @@ NSString* JSONEscape(NSString* JSONString) {
 }
 }  // namespace
 
-@interface JsPasswordManager ()
-// Injects a script that does two things:
-// 1. Injects password controller JavaScript in the page.
-// 2. Extracts the _submitted_ password form data from the DOM on the page.
-// The result is returned in |completionHandler|.
-// |completionHandler| cannot be nil.
-- (void)evaluateExtraScript:(NSString*)script
-          completionHandler:(void (^)(NSString*))completionHandler;
-@end
+@implementation JsPasswordManager {
+  // The injection receiver used to evaluate JavaScript.
+  CRWJSInjectionReceiver* _receiver;
+}
 
-@implementation JsPasswordManager
+- (instancetype)initWithReceiver:(CRWJSInjectionReceiver*)receiver {
+  DCHECK(receiver);
+  self = [super init];
+  if (self) {
+    _receiver = receiver;
+  }
+  return self;
+}
 
 - (void)findPasswordFormsWithCompletionHandler:
     (void (^)(NSString*))completionHandler {
   DCHECK(completionHandler);
-  [self evaluateExtraScript:@"__gCrWeb.findPasswordForms()"
-          completionHandler:completionHandler];
+  [_receiver executeJavaScript:@"__gCrWeb.passwords.findPasswordForms()"
+             completionHandler:^(id result, NSError*) {
+               completionHandler(base::mac::ObjCCastStrict<NSString>(result));
+             }];
 }
 
 - (void)extractForm:(NSString*)formName
       completionHandler:(void (^)(NSString*))completionHandler {
   DCHECK(completionHandler);
-  NSString* extra =
-      [NSString stringWithFormat:@"__gCrWeb.getPasswordFormDataAsString(%@)",
+  NSString* extra = [NSString
+      stringWithFormat:@"__gCrWeb.passwords.getPasswordFormDataAsString(%@)",
                        JSONEscape(formName)];
-  [self evaluateExtraScript:extra completionHandler:completionHandler];
+  [_receiver executeJavaScript:extra
+             completionHandler:^(id result, NSError*) {
+               completionHandler(base::mac::ObjCCastStrict<NSString>(result));
+             }];
 }
 
 - (void)fillPasswordForm:(NSString*)JSONString
@@ -56,30 +63,13 @@ NSString* JSONEscape(NSString* JSONString) {
        completionHandler:(void (^)(BOOL))completionHandler {
   DCHECK(completionHandler);
   NSString* script = [NSString
-      stringWithFormat:@"__gCrWeb.fillPasswordForm(%@, %@, %@)", JSONString,
-                       JSONEscape(username), JSONEscape(password)];
-  [self executeJavaScript:script completionHandler:^(id result, NSError*) {
+      stringWithFormat:@"__gCrWeb.passwords.fillPasswordForm(%@, %@, %@)",
+                       JSONString, JSONEscape(username), JSONEscape(password)];
+  [_receiver executeJavaScript:script
+             completionHandler:^(id result, NSError*) {
                completionHandler([result isEqual:@YES]);
              }];
 }
 
-#pragma mark -
-#pragma mark ProtectedMethods
-
-- (NSString*)scriptPath {
-  return @"password_controller";
-}
-
-#pragma mark -
-#pragma mark Private
-
-- (void)evaluateExtraScript:(NSString*)script
-          completionHandler:(void (^)(NSString*))completionHandler {
-  DCHECK(completionHandler);
-  NSString* JS = [[self injectionContent] stringByAppendingString:script];
-  [self executeJavaScript:JS completionHandler:^(id result, NSError*) {
-    completionHandler(base::mac::ObjCCastStrict<NSString>(result));
-  }];
-}
 
 @end

ios/chrome/browser/passwords/password_controller.mm

@@ -268,7 +268,7 @@ bool GetPageURLAndCheckTrustLevel(web::WebState* web_state, GURL* page_url) {
   std::unique_ptr<PasswordManagerDriver> passwordManagerDriver_;
   std::unique_ptr<CredentialManager> credentialManager_;
 
-  __weak JsPasswordManager* passwordJsManager_;
+  JsPasswordManager* passwordJsManager_;
 
   AccountSelectFillData fillData_;
 
@@ -327,12 +327,11 @@ bool GetPageURLAndCheckTrustLevel(web::WebState* web_state, GURL* page_url) {
     passwordManager_.reset(new PasswordManager(passwordManagerClient_.get()));
     passwordManagerDriver_.reset(new IOSChromePasswordManagerDriver(self));
 
-    passwordJsManager_ = base::mac::ObjCCastStrict<JsPasswordManager>(
-        [webState_->GetJSInjectionReceiver()
-            instanceOfClass:[JsPasswordManager class]]);
     webStateObserverBridge_ =
         std::make_unique<web::WebStateObserverBridge>(self);
     webState_->AddObserver(webStateObserverBridge_.get());
+    passwordJsManager_ = [[JsPasswordManager alloc]
+        initWithReceiver:webState_->GetJSInjectionReceiver()];
     sentRequestToStore_ = NO;
 
     if (base::FeatureList::IsEnabled(features::kCredentialManager)) {

ios/chrome/browser/passwords/password_controller_js_unittest.mm

@@ -22,10 +22,8 @@ class PasswordControllerJsTest
     : public web::WebJsTest<web::WebTestWithWebState> {
  public:
   PasswordControllerJsTest()
-      : web::WebJsTest<web::WebTestWithWebState>(@[
-          @"chrome_bundle_all_frames", @"chrome_bundle_main_frame",
-          @"password_controller"
-        ]) {}
+      : web::WebJsTest<web::WebTestWithWebState>(
+            @[ @"chrome_bundle_all_frames", @"chrome_bundle_main_frame" ]) {}
 };
 
 // IDs used in the Username and Password <input> elements.
@@ -77,10 +75,11 @@ TEST_F(PasswordControllerJsTest,
   NSString* const username = @"john.doe@gmail.com";
   NSString* const password = @"super!secret";
   LoadHtmlAndInject(GAIASignInForm(formAction, username, YES));
-  EXPECT_NSEQ(@YES, ExecuteJavaScriptWithFormat(
-                        @"__gCrWeb.fillPasswordForm(%@, '%@', '%@', '%@')",
-                        GAIASignInFormData(formAction), username, password,
-                        formAction));
+  EXPECT_NSEQ(
+      @YES,
+      ExecuteJavaScriptWithFormat(
+          @"__gCrWeb.passwords.fillPasswordForm(%@, '%@', '%@', '%@')",
+          GAIASignInFormData(formAction), username, password, formAction));
   // Verifies that the sign-in form has been filled with username/password.
   ExecuteJavaScriptOnElementsAndCheck(@"document.getElementById('%@').value",
                                       @[ kEmailInputID, kPasswordInputID ],
@@ -97,10 +96,11 @@ TEST_F(PasswordControllerJsTest,
   NSString* const username2 = @"jean.dubois@gmail.com";
   NSString* const password = @"super!secret";
   LoadHtmlAndInject(GAIASignInForm(formAction, username1, YES));
-  EXPECT_NSEQ(@NO, ExecuteJavaScriptWithFormat(
-                       @"__gCrWeb.fillPasswordForm(%@, '%@', '%@', '%@')",
-                       GAIASignInFormData(formAction), username2, password,
-                       formAction));
+  EXPECT_NSEQ(
+      @NO,
+      ExecuteJavaScriptWithFormat(
+          @"__gCrWeb.passwords.fillPasswordForm(%@, '%@', '%@', '%@')",
+          GAIASignInFormData(formAction), username2, password, formAction));
   // Verifies that the sign-in form has not been filled.
   ExecuteJavaScriptOnElementsAndCheck(@"document.getElementById('%@').value",
                                       @[ kEmailInputID, kPasswordInputID ],
@@ -117,10 +117,11 @@ TEST_F(PasswordControllerJsTest,
   NSString* const username2 = @"jane.doe@gmail.com";
   NSString* const password = @"super!secret";
   LoadHtmlAndInject(GAIASignInForm(formAction, username1, NO));
-  EXPECT_NSEQ(@YES, ExecuteJavaScriptWithFormat(
-                        @"__gCrWeb.fillPasswordForm(%@, '%@', '%@', '%@')",
-                        GAIASignInFormData(formAction), username2, password,
-                        formAction));
+  EXPECT_NSEQ(
+      @YES,
+      ExecuteJavaScriptWithFormat(
+          @"__gCrWeb.passwords.fillPasswordForm(%@, '%@', '%@', '%@')",
+          GAIASignInFormData(formAction), username2, password, formAction));
   // Verifies that the sign-in form has been filled with the new username
   // and password.
   ExecuteJavaScriptOnElementsAndCheck(@"document.getElementById('%@').value",
@@ -154,8 +155,8 @@ TEST_F(PasswordControllerJsTest,
           @"\"max_length\":524288,\"is_checkable\":false,\"value\":\"\","
           @"\"label\":\"Password:\"}]}]",
           base_url.c_str()];
-  EXPECT_NSEQ(result,
-              ExecuteJavaScriptWithFormat(@"__gCrWeb.findPasswordForms()"));
+  EXPECT_NSEQ(result, ExecuteJavaScriptWithFormat(
+                          @"__gCrWeb.passwords.findPasswordForms()"));
 };
 
 // Check that multiple password forms are identified and serialized correctly.
@@ -198,8 +199,8 @@ TEST_F(PasswordControllerJsTest,
           @"\"label\":\"Password:\"}]}]",
           base_url.c_str(), base_url.c_str()];
 
-  EXPECT_NSEQ(result,
-              ExecuteJavaScriptWithFormat(@"__gCrWeb.findPasswordForms()"));
+  EXPECT_NSEQ(result, ExecuteJavaScriptWithFormat(
+                          @"__gCrWeb.passwords.findPasswordForms()"));
 };
 
 // Test serializing of password forms.
@@ -231,7 +232,8 @@ TEST_F(PasswordControllerJsTest, GetPasswordFormData) {
   EXPECT_NSEQ(
       result,
       ExecuteJavaScriptWithFormat(
-          @"__gCrWeb.stringify(__gCrWeb.getPasswordFormData(%@))", parameter));
+          @"__gCrWeb.stringify(__gCrWeb.passwords.getPasswordFormData(%@))",
+          parameter));
 };
 
 // Check that if a form action is not set then the action is parsed to the
@@ -258,8 +260,8 @@ TEST_F(PasswordControllerJsTest, FormActionIsNotSet) {
           @"autocomplete\":true,\"is_focusable\":true,\"max_length\":524288,"
           @"\"is_checkable\":false,\"value\":\"\",\"label\":\"Password:\"}]}]",
           base_url.c_str(), base_url.c_str()];
-  EXPECT_NSEQ(result,
-              ExecuteJavaScriptWithFormat(@"__gCrWeb.findPasswordForms()"));
+  EXPECT_NSEQ(result, ExecuteJavaScriptWithFormat(
+                          @"__gCrWeb.passwords.findPasswordForms()"));
 };
 
 // Checks that a touchend event from a button which contains in a password form
@@ -274,9 +276,9 @@ TEST_F(PasswordControllerJsTest, TouchendAsSubmissionIndicator) {
        "</form>"
        "</body></html>");
 
-  // Call __gCrWeb.findPasswordForms in order to set an event handler on the
-  // button touchend event.
-  ExecuteJavaScriptWithFormat(@"__gCrWeb.findPasswordForms()");
+  // Call __gCrWeb.passwords.findPasswordForms in order to set an event handler
+  // on the button touchend event.
+  ExecuteJavaScriptWithFormat(@"__gCrWeb.passwords.findPasswordForms()");
 
   // Replace __gCrWeb.message.invokeOnHost with mock method for checking of call
   // arguments.
@@ -348,7 +350,7 @@ TEST_F(PasswordControllerJsTest, OriginsAreDifferentInPathes) {
                     page_origin.c_str(), form_fill_data_origin.c_str()];
   EXPECT_NSEQ(@YES,
               ExecuteJavaScriptWithFormat(
-                  @"__gCrWeb.fillPasswordForm(%@, '%@', '%@', '%s')",
+                  @"__gCrWeb.passwords.fillPasswordForm(%@, '%@', '%@', '%s')",
                   form_fill_data, username, password, page_origin.c_str()));
   // Verifies that the sign-in form has been filled with username/password.
   ExecuteJavaScriptOnElementsAndCheck(@"document.getElementById('%@').value",

ios/chrome/browser/passwords/password_controller_unittest.mm

@@ -1127,6 +1127,11 @@ TEST_F(PasswordControllerTestSimple, SaveOnNonHTMLLandingPage) {
   TestChromeBrowserState::Builder builder;
   std::unique_ptr<TestChromeBrowserState> browser_state(builder.Build());
   MockWebState web_state;
+  id mock_js_injection_receiver =
+      [OCMockObject mockForClass:[CRWJSInjectionReceiver class]];
+  [[mock_js_injection_receiver expect] executeJavaScript:[OCMArg any]
+                                       completionHandler:[OCMArg any]];
+  web_state.SetJSInjectionReceiver(mock_js_injection_receiver);
   ON_CALL(web_state, GetBrowserState())
       .WillByDefault(testing::Return(browser_state.get()));
 

ios/chrome/browser/web/BUILD.gn

@@ -121,6 +121,7 @@ js_compile_bundle("chrome_bundle_main_frame") {
   sources = [
     "//components/autofill/ios/browser/resources/autofill_controller.js",
     "//components/autofill/ios/fill/resources/fill.js",
+    "//ios/chrome/browser/passwords/resources/password_controller.js",
     "resources/chrome_bundle_main_frame.js",
     "resources/print.js",
   ]

ios/chrome/browser/web/resources/chrome_bundle_main_frame.js

@@ -7,4 +7,5 @@ goog.provide('__crWeb.chromeBundleMainFrame');
 
 goog.require('__crWeb.autofill');
 goog.require('__crWeb.fill');
+goog.require('__crWeb.passwords');
 goog.require('__crWeb.print');

ios/web_view/BUILD.gn

@@ -313,6 +313,7 @@ js_compile_bundle("web_view_bundle") {
     "//components/autofill/ios/browser/resources/autofill_controller.js",
     "//components/autofill/ios/fill/resources/fill.js",
     "//components/autofill/ios/fill/resources/form.js",
+    "//ios/chrome/browser/passwords/resources/password_controller.js",
     "resources/web_view_bundle.js",
   ]
 }

ios/web_view/resources/web_view_bundle.js

@@ -8,3 +8,4 @@ goog.provide('__crWeb.webViewBundle');
 goog.require('__crWeb.autofill');
 goog.require('__crWeb.fill');
 goog.require('__crWeb.form');
+goog.require('__crWeb.passwords');