[IntentHandling] Support text content sharing.

This CL adds the support for text content sharing in the intent handling
system.

BUG=1092784

Change-Id: I360a3e9e36fdc11ea5bc26c560aff46d0b9aac2f
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2409396Reviewed-by: Dominick Ng <dominickn@chromium.org>
Commit-Queue: Maggie Cai <mxcai@chromium.org>
Cr-Commit-Position: refs/heads/master@{#806853}

chrome/browser/apps/app_service/arc_apps.cc

@@ -213,7 +213,7 @@ base::Optional<arc::UserInteractionType> GetUserInterationType(
 
 arc::mojom::IntentInfoPtr CreateArcIntent(apps::mojom::IntentPtr intent) {
   arc::mojom::IntentInfoPtr arc_intent;
-  if (!intent->url.has_value()) {
+  if (!intent->url.has_value() && !intent->share_text.has_value()) {
     return arc_intent;
   }
   arc_intent = arc::mojom::IntentInfo::New();
@@ -230,7 +230,14 @@ arc::mojom::IntentInfoPtr CreateArcIntent(apps::mojom::IntentPtr intent) {
   } else {
     arc_intent->action = arc::kIntentActionView;
   }
-  arc_intent->data = intent->url->spec();
+  if (intent->url.has_value()) {
+    arc_intent->data = intent->url->spec();
+  }
+  if (intent->share_text.has_value()) {
+    arc_intent->extras = base::flat_map<std::string, std::string>();
+    arc_intent->extras.value().insert(std::make_pair(
+        "android.intent.extra.TEXT", intent->share_text.value()));
+  }
   return arc_intent;
 }
 
@@ -761,14 +768,8 @@ void ArcApps::LaunchAppWithIntent(const std::string& app_id,
         !intent->activity_name.value().empty()) {
       activity->activity_name = intent->activity_name.value();
     }
-    // At the moment, the only case we have mime_type field set is to share
-    // files, in this case, convert the file urls to content urls and use
-    // arc file system instance to launch the app with files.
-    if (intent->mime_type.has_value()) {
-      if (!intent->file_urls.has_value()) {
-        LOG(ERROR) << "Share files failed, share intent is not valid";
-        return;
-      }
+
+    if (intent->mime_type.has_value() && intent->file_urls.has_value()) {
       file_manager::util::ConvertToContentUrls(
           apps::GetFileSystemURL(profile_, intent->file_urls.value()),
           base::BindOnce(&OnContentUrlResolved, std::move(intent),

components/services/app_service/public/cpp/intent_util.cc

@@ -167,6 +167,15 @@ apps::mojom::IntentPtr CreateShareIntentFromDriveFile(
   return intent;
 }
 
+apps::mojom::IntentPtr CreateShareIntentFromText(
+    const std::string& share_text) {
+  auto intent = apps::mojom::Intent::New();
+  intent->action = kIntentActionSend;
+  intent->mime_type = "text/plain";
+  intent->share_text = share_text;
+  return intent;
+}
+
 bool ConditionValueMatches(
     const std::string& value,
     const apps::mojom::ConditionValuePtr& condition_value) {

components/services/app_service/public/cpp/intent_util.h

@@ -35,6 +35,9 @@ apps::mojom::IntentPtr CreateShareIntentFromDriveFile(
     const std::string& mime_type,
     const GURL& drive_share_url);
 
+// Create an intent struct from URL.
+apps::mojom::IntentPtr CreateShareIntentFromText(const std::string& share_text);
+
 // Return true if |value| matches with the |condition_value|, based on the
 // pattern match type in the |condition_value|.
 bool ConditionValueMatches(

components/services/app_service/public/mojom/types.mojom

@@ -329,6 +329,7 @@ struct Intent {
   // The Drive share URL, this is only filled if the intent contains a file
   // from Google Drive.
   url.mojom.Url? drive_share_url;
+  string? share_text; // Text to share. e.g. Share link to other app.
 };
 
 // Represents a group of |app_ids| that is no longer preferred app of their