Bundle component strings in //ios/web_view.

Fixes this warning log:
[0411/153122.161864:WARNING:resource_bundle.cc(565)] locale resources are not loaded

Also shows "This plugin is not supported" when visiting websites with flash content.

Cq-Include-Trybots: master.tryserver.chromium.mac:ios-simulator-cronet;master.tryserver.chromium.mac:ios-simulator-full-configs
Change-Id: I33e7e65dcb8193a93f5208f847a39a20e8472987
Bug: 811603
Reviewed-on: https://chromium-review.googlesource.com/1024488Reviewed-by: Jochen Eisinger <jochen@chromium.org>
Reviewed-by: Mike Dougherty <michaeldo@chromium.org>
Commit-Queue: John Wu <jzw@chromium.org>
Cr-Commit-Position: refs/heads/master@{#553312}

ios/web_view/BUILD.gn

@@ -5,6 +5,7 @@
 import("//build/buildflag_header.gni")
 import("//build/config/ios/ios_sdk.gni")
 import("//build/config/ios/rules.gni")
+import("//build/config/locales.gni")
 import("//components/cronet/native/include/headers.gni")
 import("//components/grpc_support/include/headers.gni")
 import("//ios/build/config.gni")
@@ -224,6 +225,7 @@ ios_web_view_deps = [
   "//components/signin/core/browser",
   "//components/signin/ios/browser",
   "//components/signin/ios/browser:active_state_manager",
+  "//components/strings:components_strings_grit",
   "//components/sync",
   "//components/translate/core/browser",
   "//components/translate/core/common",
@@ -362,6 +364,17 @@ js_compile_bundle("web_view_bundle") {
   ]
 }
 
+repack_locales("repack_locales") {
+  visibility = [ ":packed_resources" ]
+  source_patterns = [ "${root_gen_dir}/components/strings/components_strings_" ]
+
+  deps = [
+    "//components/strings:components_strings",
+  ]
+  input_locales = ios_packed_locales
+  output_locales = ios_packed_locales_as_mac_outputs
+}
+
 repack("repack_resources") {
   visibility = [ ":packed_resources" ]
   deps = [
@@ -378,6 +391,7 @@ repack("repack_resources") {
 bundle_data("packed_resources") {
   visibility = [ "//ios/web_view:*" ]
   public_deps = [
+    ":repack_locales",
     ":repack_resources",
   ]
   sources = [

ios/web_view/internal/DEPS

@@ -14,6 +14,7 @@ include_rules = [
   "+components/proxy_config",
   "+components/signin/core",
   "+components/signin/ios",
+  "+components/strings/grit",
   "+components/sync",
   "+components/translate/core",
   "+components/translate/ios",

ios/web_view/internal/web_view_web_client.h

@@ -28,6 +28,7 @@ class WebViewWebClient : public web::WebClient {
   base::RefCountedMemory* GetDataResourceBytes(int resource_id) const override;
   NSString* GetDocumentStartScriptForMainFrame(
       web::BrowserState* browser_state) const override;
+  base::string16 GetPluginNotSupportedText() const override;
 
  private:
   DISALLOW_COPY_AND_ASSIGN(WebViewWebClient);

ios/web_view/internal/web_view_web_client.mm

@@ -7,11 +7,13 @@
 #include "base/logging.h"
 #include "base/mac/bundle_locations.h"
 #include "base/strings/sys_string_conversions.h"
+#include "components/strings/grit/components_strings.h"
 #include "ios/web/public/user_agent.h"
 #include "ios/web_view/internal/web_view_browser_state.h"
 #import "ios/web_view/internal/web_view_early_page_script_provider.h"
 #import "ios/web_view/internal/web_view_web_main_parts.h"
 #include "ios/web_view/public/cwv_web_view.h"
+#include "ui/base/l10n/l10n_util.h"
 #include "ui/base/resource/resource_bundle.h"
 
 #if !defined(__has_feature) || !__has_feature(objc_arc)
@@ -82,4 +84,8 @@ NSString* WebViewWebClient::GetDocumentStartScriptForMainFrame(
   return [scripts componentsJoinedByString:@";"];
 }
 
+base::string16 WebViewWebClient::GetPluginNotSupportedText() const {
+  return l10n_util::GetStringUTF16(IDS_PLUGIN_NOT_SUPPORTED);
+}
+
 }  // namespace ios_web_view