Don't expose webshare from the browser when the origin trial disables it.

chrome/browser/chrome_content_browser_client.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/chrome_content_browser_client.h"
 
 #include <map>
 #include <set>
 #include <utility>
 #include <vector>
@@ skipping 85 matching lines @@
 #include "chrome/browser/ui/webui/chrome_web_ui_controller_factory.h"
 #include "chrome/browser/ui/webui/log_web_ui_url.h"
 #include "chrome/browser/usb/usb_tab_helper.h"
 #include "chrome/common/channel_info.h"
 #include "chrome/common/chrome_constants.h"
 #include "chrome/common/chrome_paths.h"
 #include "chrome/common/chrome_switches.h"
 #include "chrome/common/env_vars.h"
 #include "chrome/common/features.h"
 #include "chrome/common/logging_chrome.h"
+#include "chrome/common/origin_trials/chrome_origin_trial_policy.h"
 #include "chrome/common/pepper_permission_util.h"
 #include "chrome/common/pref_names.h"
 #include "chrome/common/render_messages.h"
 #include "chrome/common/secure_origin_whitelist.h"
 #include "chrome/common/url_constants.h"
 #include "chrome/grit/browser_resources.h"
 #include "chrome/grit/generated_resources.h"
 #include "chrome/installer/util/google_update_settings.h"
 #include "chromeos/chromeos_constants.h"
 #include "components/autofill/content/browser/content_autofill_driver_factory.h"
@@ skipping 1350 matching lines @@
     // this point.
     LOG(WARNING) << "Received field trial params, "
                     "but blink-settings switch already specified.";
     return;
   }
 
   command_line->AppendSwitchASCII(switches::kBlinkSettings,
                                   base::JoinString(blink_settings, ","));
 }
 
+#if BUILDFLAG(ANDROID_JAVA_UI)
+void ForwardShareServiceRequest(
+    base::WeakPtr<shell::InterfaceProvider> interface_provider,
+    blink::mojom::ShareServiceRequest request) {
+  if (!interface_provider ||
+      ChromeOriginTrialPolicy().IsFeatureDisabled("WebShare")) {
+    return;
+  }
+  interface_provider->GetInterface(std::move(request));
+}
+#endif
+
 }  // namespace
 
 void ChromeContentBrowserClient::AppendExtraCommandLineSwitches(
     base::CommandLine* command_line,
     int child_process_id) {
 #if defined(OS_MACOSX)
   std::unique_ptr<metrics::ClientInfo> client_info =
       GoogleUpdateSettings::LoadMetricsClientInfo();
   if (client_info) {
     command_line->AppendSwitchASCII(switches::kMetricsClientID,
@@ skipping 1502 matching lines @@
                  render_frame_host));
 
 #if BUILDFLAG(ANDROID_JAVA_UI)
   content::WebContents* web_contents =
       content::WebContents::FromRenderFrameHost(render_frame_host);
   if (web_contents) {
     registry->AddInterface(
         web_contents->GetJavaInterfaces()
             ->CreateInterfaceFactory<blink::mojom::PaymentRequest>());
     registry->AddInterface(
-        web_contents->GetJavaInterfaces()
-            ->CreateInterfaceFactory<blink::mojom::ShareService>());
+        base::Bind(&ForwardShareServiceRequest,
+                   web_contents->GetJavaInterfaces()->GetWeakPtr()));
   }
 #endif
 
 #if defined(ENABLE_MEDIA_ROUTER)
   registry->AddInterface(
       base::Bind(&CastRemotingConnector::CreateRemoterFactory,
                  render_frame_host));
 #endif
 }
 
@@ skipping 256 matching lines @@
   if (channel <= kMaxDisableEncryptionChannel) {
     static const char* const kWebRtcDevSwitchNames[] = {
       switches::kDisableWebRtcEncryption,
     };
     to_command_line->CopySwitchesFrom(from_command_line,
                                       kWebRtcDevSwitchNames,
                                       arraysize(kWebRtcDevSwitchNames));
   }
 }
 #endif  // defined(ENABLE_WEBRTC)