Cleanup of blink::WebFileChooserParams

- Remove unnecessary #include
- Remove unused |capture| member
- Update comments

Bug: 869257
Change-Id: Ia16c39bd31be1a0d38f67efe6823cb62229fe0c8
Reviewed-on: https://chromium-review.googlesource.com/1157947Reviewed-by: Kinuko Yasuda <kinuko@chromium.org>
Commit-Queue: Kent Tamura <tkent@chromium.org>
Cr-Commit-Position: refs/heads/master@{#579720}

content/renderer/render_frame_impl.cc

@@ -198,6 +198,7 @@
 #include "third_party/blink/public/web/web_context_features.h"
 #include "third_party/blink/public/web/web_document.h"
 #include "third_party/blink/public/web/web_element_collection.h"
+#include "third_party/blink/public/web/web_file_chooser_completion.h"
 #include "third_party/blink/public/web/web_find_options.h"
 #include "third_party/blink/public/web/web_frame_owner_properties.h"
 #include "third_party/blink/public/web/web_frame_serializer.h"

content/renderer/render_view_impl.cc

@@ -139,6 +139,7 @@
 #include "third_party/blink/public/web/web_dom_event.h"
 #include "third_party/blink/public/web/web_dom_message_event.h"
 #include "third_party/blink/public/web/web_element.h"
+#include "third_party/blink/public/web/web_file_chooser_completion.h"
 #include "third_party/blink/public/web/web_file_chooser_params.h"
 #include "third_party/blink/public/web/web_form_control_element.h"
 #include "third_party/blink/public/web/web_form_element.h"

content/shell/test_runner/web_frame_test_client.cc

@@ -29,6 +29,7 @@
 #include "third_party/blink/public/platform/web_url_response.h"
 #include "third_party/blink/public/web/web_console_message.h"
 #include "third_party/blink/public/web/web_element.h"
+#include "third_party/blink/public/web/web_file_chooser_completion.h"
 #include "third_party/blink/public/web/web_frame.h"
 #include "third_party/blink/public/web/web_frame_widget.h"
 #include "third_party/blink/public/web/web_local_frame.h"

third_party/blink/public/web/web_file_chooser_params.h

@@ -34,17 +34,16 @@
 #include "third_party/blink/public/platform/web_string.h"
 #include "third_party/blink/public/platform/web_url.h"
 #include "third_party/blink/public/platform/web_vector.h"
-#include "third_party/blink/public/web/web_file_chooser_completion.h"
 
 namespace blink {
 
 struct WebFileChooserParams {
-  // If |multiSelect| is true, the dialog allows the user to select multiple
+  // If |multi_select| is true, the dialog allows the user to select multiple
   // files.
   bool multi_select;
   // If |directory| is true, the dialog allows the user to select a directory.
   bool directory;
-  // If |saveAs| is true, the dialog allows the user to select a possibly
+  // If |save_as| is true, the dialog allows the user to select a possibly
   // non-existent file. This can be used for a "Save As" dialog.
   bool save_as;
   // |title| is the title for a file chooser dialog. It can be an empty string.
@@ -56,19 +55,17 @@ struct WebFileChooserParams {
   // This list comes from an 'accept' attribute value of an INPUT element, and
   // it contains only lower-cased MIME type strings and file extensions.
   WebVector<WebString> accept_types;
-  // |selectedFiles| has filenames which a file upload control already selected.
-  // A WebViewClient implementation may ask a user to select
+  // |selected_files| has filenames which a file upload control already
+  // selected. A WebLocalFrameClient implementation may ask a user to select
   //  - removing a file from the selected files,
   //  - appending other files, or
   //  - replacing with other files
   // before opening a file chooser dialog.
   WebVector<WebString> selected_files;
   // See http://www.w3.org/TR/html-media-capture/ for the semantics of the
-  // capture attribute. If |useMediaCapture| is true, the media types
-  // indicated in |acceptTypes| should be obtained from the device's
-  // environment using a media capture mechanism. |capture| is deprecated and
-  // provided for compatibility reasons.
-  WebString capture;
+  // capture attribute. If |use_media_capture| is true, the media types
+  // indicated in |accept_types| should be obtained from the device's
+  // environment using a media capture mechanism.
   bool use_media_capture;
   // Whether WebFileChooserCompletion needs local paths or not. If the result
   // of file chooser is handled by the implementation of